**So, here's the thing. I was making a mansion and everything was neat, but then I wanted to duplicate the mansion with WorldEdit and it crashed the game (well froze and then I had to close the game).
That was weird since I had copied a bigger pyramid before and nothing happened then, I then tried to copy and paste with Building Gadgets, and it did paste, but the game kept freezing every second.

I had to close the game since it didn't crash, and I had to add more RAM, I have plenty, so it wasn't a problem to allocate more, but it was strange. But as I kept adding more RAM, and entering the game, Task Manager showed me that Minecraft kept maxing on RAM every time, and the freezing didn't stop. Until I got to 12 RAM, the game just froze and crashed by itself, giving me this crash report showing me that this mod had something to do with the problem, not sure what it may be.**

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 10/2/20 8:10 AM
Description: Playing level event

java.lang.NullPointerException: Playing level event
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock.lambda$getSoundType$19(DoubleSlabBlock.java:324) ~[?:2.11.5] {re:classloading}
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock$$Lambda$17878/231091588.apply(Unknown Source) ~[?:?] {}
at java.util.Optional.map(Optional.java:215) ~[?:1.8.0_51] {}
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock.getSoundType(DoubleSlabBlock.java:324) ~[?:2.11.5] {re:classloading}
at net.minecraftforge.common.extensions.IForgeBlockState.getSoundType(IForgeBlockState.java:650) ~[?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.optifine.reflect.Reflector.call(Reflector.java:1100) ~[?:?] {re:classloading}
at net.minecraft.client.renderer.WorldRenderer.func_180439_a(WorldRenderer.java:3665) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,xf:OptiFine:default,pl:mixin:APP:mixins.optiforge.json:net.minecraft.client.renderer.MixinWorldRenderer,pl:mixin:A}
at net.minecraft.client.world.ClientWorld.func_217378_a(ClientWorld.java:834) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.block.Block.func_176208_a(Block.java:720) ~[?:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
at cjminecraft.doubleslabs.common.blocks.DynamicSlabBlock.func_176208_a(DynamicSlabBlock.java:225) ~[?:2.11.5] {re:classloading}
at net.minecraftforge.common.extensions.IForgeBlock.removedByPlayer(IForgeBlock.java:217) ~[?:?] {re:classloading,re:mixin}
at cjminecraft.doubleslabs.common.blocks.DynamicSlabBlock.removedByPlayer(DynamicSlabBlock.java:218) ~[?:2.11.5] {re:classloading}
at net.minecraftforge.common.extensions.IForgeBlockState.removedByPlayer(IForgeBlockState.java:167) ~[?:?] {re:classloading}
at net.minecraft.client.multiplayer.PlayerController.func_187103_a(PlayerController.java:111) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.multiplayer.PlayerController.func_178891_a(PlayerController.java:76) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.multiplayer.PlayerController.func_180511_b(PlayerController.java:133) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.optifine.override.PlayerControllerOF.func_180511_b(PlayerControllerOF.java:51) ~[?:?] {re:classloading}
at net.minecraft.client.Minecraft.func_147116_af(Minecraft.java:1226) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:1538) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1375) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:904) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:553) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(SourceFile:204) [?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.15.2-31.2.31.jar:31.2] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$490/1074993056.call(Unknown Source) [forge-1.15.2-31.2.31.jar:31.2] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] {re:classloading}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] {re:classloading}

A detailed walkthrough of the error, its code path, and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock.lambda$getSoundType$19(DoubleSlabBlock.java:324)
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock$$Lambda$17878/231091588.apply(Unknown Source)
at java.util.Optional.map(Optional.java:215)
at cjminecraft.doubleslabs.common.blocks.DoubleSlabBlock.getSoundType(DoubleSlabBlock.java:324)
at net.minecraftforge.common.extensions.IForgeBlockState.getSoundType(IForgeBlockState.java:650)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.optifine.reflect.Reflector.call(Reflector.java:1100)
at net.minecraft.client.renderer.WorldRenderer.func_180439_a(WorldRenderer.java:3665)

-- Level event being played --
Details:
Block coordinates: World: (272,10,-19), Chunk: (at 0,0,13 in 17,-2; contains blocks 272,0,-32 to 287,255,-17), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Event source: ClientPlayerEntity['RipHSniper'/72, l='MpServer', x=271.84, y=11.00, z=-21.43]
Event type: 2001
Event data: 147634
Stacktrace:
at net.minecraft.client.world.ClientWorld.func_217378_a(ClientWorld.java:834)
at net.minecraft.block.Block.func_176208_a(Block.java:720)
at cjminecraft.doubleslabs.common.blocks.DynamicSlabBlock.func_176208_a(DynamicSlabBlock.java:225)
at net.minecraftforge.common.extensions.IForgeBlock.removedByPlayer(IForgeBlock.java:217)
at cjminecraft.doubleslabs.common.blocks.DynamicSlabBlock.removedByPlayer(DynamicSlabBlock.java:218)
at net.minecraftforge.common.extensions.IForgeBlockState.removedByPlayer(IForgeBlockState.java:167)
at net.minecraft.client.multiplayer.PlayerController.func_187103_a(PlayerController.java:111)
at net.minecraft.client.multiplayer.PlayerController.func_178891_a(PlayerController.java:76)
at net.minecraft.client.multiplayer.PlayerController.func_180511_b(PlayerController.java:133)
at net.optifine.override.PlayerControllerOF.func_180511_b(PlayerControllerOF.java:51)
at net.minecraft.client.Minecraft.func_147116_af(Minecraft.java:1226)
at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:1538)

-- Affected level --
Details:
All players: 1 total; [ClientPlayerEntity['RipHSniper'/72, l='MpServer', x=271.84, y=11.00, z=-21.43]]
Chunk stats: Client Chunk Cache: 441, 272
Level dimension: DimensionType{minecraft:overworld}
Level name: MpServer
Level seed: 2042461880191278340
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options: {}
Level spawn location: World: (224,4,16), Chunk: (at 0,0,0 in 14,1; contains blocks 224,0,16 to 239,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 518069 game time, 50969 day time
Known server brands:
Level was modded: false
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Server brand: forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.world.ClientWorld.func_72914_a(ClientWorld.java:611)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:1763)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:567)
at net.minecraft.client.main.Main.main(SourceFile:204)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$490/1074993056.call(Unknown Source)
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

-- System Details --
Details:
Minecraft Version: 1.15.2
Minecraft Version ID: 1.15.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 4361932520 bytes (4159 MB) / 12851347456 bytes (12256 MB) up to 12884901888 bytes (12288 MB)
CPUs: 6
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx12G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 5.1.0+69+master.79f13f7
ModLauncher launch target: fmlclient
ModLauncher naming: srg
ModLauncher services:
/eventbus-2.2.0-service.jar eventbus PLUGINSERVICE
/forge-1.15.2-31.2.31.jar object_holder_definalize PLUGINSERVICE
/forge-1.15.2-31.2.31.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-2.1.3-shadowed.jar accesstransformer PLUGINSERVICE
/forge-1.15.2-31.2.31.jar capability_inject_definalize PLUGINSERVICE
/forge-1.15.2-31.2.31.jar runtimedistcleaner PLUGINSERVICE
/preview_OptiFine_1.15.2_HD_U_G1_pre30.jar OptiFine TRANSFORMATIONSERVICE
/forge-1.15.2-31.2.31.jar fml TRANSFORMATIONSERVICE
/OptiForge-MC1.15.2-0.1.27.jar FakeOptiFine TRANSFORMATIONSERVICE
/MixinBootstrap-1.0.3.jar mixinbootstrap TRANSFORMATIONSERVICE
/OptiForge-MC1.15.2-0.1.27.jar optiforge TRANSFORMATIONSERVICE
/MixinBootstrap-1.0.3.jar mixin PLUGINSERVICE
/MixinBootstrap-1.0.3.jar mixinbootstrap PLUGINSERVICE
FML: 31.2
Forge: net.minecraftforge:31.2.31
FML Language Providers:
[email protected]
minecraft@1
[email protected]
Mod List:
vanillaextension-1.15.2-1.0.3.jar Vanilla Extension {[email protected] DONE}
roughmobsrevamped-1.15.2-4.1.2.jar Rough Mobs Revamped {roughmobsrevamped@version DONE}
ElenaiDodge-1.15.2-1.7.0.jar Elenai Dodge {[email protected] DONE}
DoggyTalents-1.15.2-1.15.2.3 (1).jar Doggy Talents {[email protected] DONE}
ProjectE-1.15.2-PE1.0.4.jar ProjectE {[email protected] DONE}
flower-breeding-1.15.2-1.4.jar Lizzie's Flower Breeding {[email protected] DONE}
deadlyendphantoms-1.15.2-1.01.jar Deadly End Phantoms {[email protected] DONE}
BetterCaves-1.15.2-1.0.jar YUNG's Better Caves {[email protected] DONE}
TerraForged-1.15.2-0.0.15.jar TerraForged {[email protected] DONE}
CookingForBlockheads_1.15.2-8.0.3.jar Cooking for Blockheads {[email protected] DONE}
Placebo-1.15.2-3.1.0.jar Placebo {[email protected] DONE}
citadel-1.1.11.jar Citadel {[email protected] DONE}
MutantBeasts-1.15.2-1.0.7.jar Mutant Beasts {[email protected] DONE}
Bookshelf-1.15.2-5.6.40.jar Bookshelf {[email protected] DONE}
Reliquary-1.15.2-1.3.4.995.jar Reliquary {[email protected] DONE}
buildinggadgets-3.4.0.jar Building Gadgets {[email protected] DONE}
Apotheosis-1.15.2-3.3.5.jar Apotheosis {[email protected] DONE}
ProgressiveBosses-2.1.5-mc1.15.2 (1).jar Progressive Bosses {[email protected] DONE}
mcw-doors-1.0.0-mc1.15.2 (1).jar Macaw's Doors {[email protected] DONE}
MekanismGenerators-1.15.2-9.10.9.422.jar Mekanism: Generators {[email protected] DONE}
SnowRealMagic-1.15.2-1.7.5 (1).jar Snow! Real Magic! {[email protected] DONE}
shetiphiancore-1.15-3.7.2.jar ShetiPhian-Core {[email protected] DONE}
refinedstorage-1.8.8.jar Refined Storage {[email protected] DONE}
corpse-1.15.2-1.0.6.jar Corpse {[email protected] DONE}
repurposedstructures-1.15.2-1.7.2.jar Repurposed Structures {[email protected] DONE}
AmbientSounds_v3.0.20_mc1.15.2.jar Ambient Sounds {[email protected] DONE}
GentleFawn-1.1.1-MC1.15.2.jar Gentle Fawn {[email protected] DONE}
BiomesOPlenty-1.15.2-10.0.0.366-universal.jar Biomes O' Plenty {[email protected] DONE}
BetterDrowning-1.15.2-1.0.3.jar BetterDrowning {[email protected] DONE}
masonry-1.15.2-0.3.4 (1).jar Masonry {masonry@NONE DONE}
simplefarming-1.15.2-1.3.0.jar Simple Farming {[email protected] DONE}
xercamod-1.15.2-2.6.jar Xerca Mod {[email protected] DONE}
curios-FORGE-1.15.2-2.0.2.4.jar Curios API {[email protected] DONE}
extlights-2.1.jar Extended Lights {[email protected] DONE}
horse_colors-1.15.2-1.4.0.1.jar Realistic Horse Genetics {[email protected] DONE}
OreExcavation-1.7.151.jar Ore Excavation {oreexcavation@NONE DONE}
Mushroom+Quest_1.15.2_v2.3.jar Mushroom Quest {[email protected] DONE}
EndReborn+[0.6.1].jar End: Reborn {[email protected] DONE}
lottaterracotta-1.15.2-1.3.1.jar Lotta Terracotta {[email protected] DONE}
furniture-7.0.0-pre16-1.15.1 (1).jar MrCrayfish's Furniture Mod {[email protected] DONE}
productivebees-1.15.2-0.3.2.jar Productive Bees {[email protected] DONE}
+skeleton-expansion-3.0.1_1.15.2.jar Skeleton Expansion+ {[email protected] DONE}
BetterMineshaftsForge-1.15.2-1.3.1.jar YUNG's Better Mineshafts {[email protected] DONE}
Kiwi-1.15.2-2.7.1.jar Kiwi {[email protected] DONE}
Craft_and_Hunt_V1.1.0_MC_1.15.2.jar Craft and Hunt {[email protected] DONE}
berry_good-2.0.0.jar Berry Good {[email protected] DONE}
Mexicraft+1.0.1.jar Mexicraft {[email protected] DONE}
jei-1.15.2-6.0.2.12.jar Just Enough Items {[email protected] DONE}
OptiForge-MC1.15.2-0.1.27.jar OptiForge {[email protected] DONE}
Abnormals-Core-1.15.2-1.0.6.jar Abnormals Core {[email protected] DONE}
Bamboo-Blocks-1.15.2-1.4.1.jar Bamboo Blocks {bambooblocks@NONE DONE}
Buzzier-Bees-1.15.2-1.5.2.jar Buzzier Bees {[email protected] DONE}
Mekanism-1.15.2-9.10.9.422.jar Mekanism {[email protected] DONE}
Upgrade-Aquatic-1.15.2-1.7.1.jar Upgrade Aquatic {[email protected] DONE}
SneakyMagic-v2.0-1.15.2.jar Sneaky Magic {[email protected] DONE}
Waystones_1.15.2-6.0.2.jar Waystones {[email protected] DONE}
WallpaperCraft-1.15.2-1.2.4.jar Wallpapercraft {[email protected] DONE}
WallpapercraftSlabs-1.15.2-1.1.0.jar Wallpapercraft - Slabs! {[email protected] DONE}
WallpapercraftStairs-1.15.2-1.1.1.jar Wallpapercraft - Stairs {[email protected] DONE}
EnameledArmor-1.15.1-1.0.0.5.jar Enameled Armor Mod {[email protected] DONE}
sweetconcrete-1.15.2-1.7.1.jar Sweet Concrete {[email protected] DONE}
NaturesCompass-1.15.2-1.8.5.jar Nature's Compass {[email protected] DONE}
snowundertrees-1.15.2-v1.1.1.jar Snow Under Trees {[email protected] DONE}
EnhancedVanilla_Snapshot_20w27a-Forge-1.15.2.31.2.0.jar Enhanced Vanilla {enhancedvanilla@Snapshot 20w27a DONE}
additional_lights-1.15.2-2.0.2.jar Additional Lights {[email protected] DONE}
iceandfire-2.0.1.jar Ice and Fire {[email protected] DONE}
JEITweaker-1.15.2-1.0.1.3.jar JEI Tweaker {[email protected] DONE}
CraftTweaker-1.15.2-6.0.0.24.jar CraftTweaker {[email protected] DONE}
Swamp-Expansion-1.15.2-1.7.3.jar Swamp Expansion {swampexpansion@NONE DONE}
beyond_the_nether_wastes_v_1.1.0.jar Beyond The Nether Wastes {[email protected] DONE}
forge-1.15.2-31.2.31-universal.jar Forge {[email protected] DONE}
Bountiful-1.15.2-3.1.2.jar Bountiful {[email protected] DONE}
goprone-1.15.x-1.3.0.jar GoProne {[email protected] DONE}
Bones-1.15.2-1.3.2.jar Bones {[email protected] DONE}
RottenCreatures-1.15.2-0.9.7.jar Rotten Creatures {[email protected] DONE}
forge-1.15.2-31.2.31-client.jar Minecraft {[email protected] DONE}
cofh_core-1.15.2-0.6.4b.jar CoFH Core {[email protected] DONE}
ensorcellation-1.15.2-0.6.0b.jar Ensorcellation {[email protected] DONE}
The-Endergetic-Expansion-1.15.2-v1.3.2.jar The Endergetic Expansion {[email protected] DONE}
packedup-1.0.18-mc1.15.jar PackedUp {[email protected] DONE}
archers_paradox-1.15.2-0.6.0b.jar Archer's Paradox {[email protected] DONE}
Savage-and-Ravage-1.15.2-1.1.4.jar Savage & Ravage {[email protected] DONE}
autumnity-1.3.3-1.15.2.jar Autumnity {[email protected] DONE}
polymorph-FORGE-1.15.2-0.9.jar Polymorph {[email protected] DONE}
multibeds-1.15-1.6.1.jar Multi-Beds {[email protected] DONE}
AutoRegLib-1.5-40 (1).jar AutoRegLib {[email protected] DONE}
Quark-r2.1-245.jar Quark {[email protected] DONE}
Charm-1.15.2-1.5.9.jar Charm {[email protected] DONE}
Charmonium-1.15.2-1.0.1.jar Charmonium {[email protected] DONE}
Enhanced-Mushrooms-1.15.2-v1.2.2.jar Enhanced Mushrooms {enhanced_mushrooms@$1.1.0 DONE}
Strange-1.15.2-1.0.0-beta.5.hotfix1.jar Strange {[email protected] DONE}
DoubleSlabs-1.15-2.11.5.jar Double Slabs {[email protected] DONE}
lanterncolors-1.15.2-1.0.1.jar Lantern Colors {[email protected] DONE}
TaigaAdditions+[0.1.2].jar Taiga Additions {[email protected] DONE}
WorldEdit-CUI-FE3-1.15.2-3.0.5 (1).jar WorldEdit CUI Forge Edition 3 {[email protected] DONE}
worldedit-forge-mc1.15.2-7.1.0 (1).jar WorldEdit {[email protected];48cc31c DONE}
mobcatcher-2.2 (1).jar Mob Catcher {[email protected] DONE}
ilikewood-1.15.2-2.2.2.0 (2).jar I Like Wood {[email protected] DONE}
Aquaculture-1.15.2-2.0.20.jar Aquaculture 2 {[email protected] DONE}
ExtendedNetherBackport-1.15.2-Beta-4.1.2.jar Extended Nether Backport {[email protected] DONE}
Kiwi Modules:
kiwi:contributors
kiwi:data
snowrealmagic:snowrealmagic
Launched Version: 1.15.2-forge-31.2.31
Backend library: LWJGL version 3.2.2 build 10
Backend API: Radeon RX 580 Series GL version 4.6.13559 Compatibility Profile Context 26.20.12028.2, ATI Technologies Inc.
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'forge'
Type: Client (map_client.txt)
Resource Packs: mod_resources, vanilla, file/DoggyTalentsDogs (incompatible), file/Thorolhugil's Cute Squids (incompatible), file/Creatures+, file/Haston's Foxes, file/PupleDrago (incompatible), file/RSRecolor Green
Current Language: English (US)
CPU: 6x Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz
OptiFine Version: OptiFine_1.15.2_HD_U_G1_pre30
OptiFine Build: 20200622-083032
Render Distance Chunks: 8
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.13559 Compatibility Profile Context 26.20.12028.2
OpenGlRenderer: Radeon RX 580 Series
OpenGlVendor: ATI Technologies Inc.
CpuCount: 6

One thing I failed to add, Building Gadgets doesn't seem to work well with this mod, marking double slabs as missing texture and not automatically placing a slab over another slab. But I feel like it's more a problem on the side.

The crash issue I believe is a duplicate of #138 and as @Paspartout has said, the RAM issue is a duplicate of #137. Please refer to those issues. Sorry for the delay in response

I think this might be a duplicate of issue #137