hi, i've put together a modpack to play with some friends. I like the chisel mod but every time in this version that i put it, it completely lags the game.
Forge 1.12.2 2566
Chisel-MC1.12-0.1.1.24
CTM-MC1.12-0.2.3.9
Minecraft all options to minimum.
Foamfix - optifine - betterfps - sampler.

I also have the sampler mod by player, i dont really know what the graphs represent but i know that when there is a lot of spikes, its bad. (i think that the green graph is for rendered stuff? the lightblue i dont know). but i cant seem to find any "tutos"on that. anyway, when i put the chisel mod, the graphs of the sampler mod go off the charts. I really dont know why. I have taken in and out every mod that i have and try but the "problem" is with chisel. Maybe im doing something wrong but im out of ideas, so im asking.

every now and then when forge or other mods get updated i try again to put chisel, but i go from like 60-70 fps to 2. It really bothers me because like you said, i didnt even put a block, maybe the worldgen blocks? but it seems difficult. i dont know what to think anymore, that why i asked.

Just in case, the list of mods.(sorry i dont know how to spoiler tag here :/)
Mods:
ActuallyAdditions-1.12.2-r126
AppleSkin-mc1.12-1.0.9
Aroma1997Core-1.12.2-2.0.0.0.b129
Aroma1997s-Dimensional-World-1.12.2-2.0.0.2.b61
astralsorcery-1.12.2-1.8.4
AutoRegLib-1.3-15
badwithernocookiereloaded-1.12.2-2.12
Baubles-1.12-1.5.1
baubley-heart-canisters-1.12.2-1.1.0b
bdlib-1.14.3.10-mc1.12.2
BetterFps-1.4.8
blockdrops-1.12.2-1.4.0
Botania r1.10-352
BowInfinityFix-1.11.x-1.12.x-rv5
BrandonsCore-1.12-2.3.6.139-universal
Chameleon-1.12-4.1.3
ChickenChunks-1.12.2-2.4.1.71-universal
chunkedgeindicator-1.4
CodeChickenLib-1.12.2-3.1.5.331-universal
CoFHCore-1.12.2-4.3.8.29-universal
CoFHWorld-1.12.2-1.1.0.11-universal
CommonCapabilities-1.12-1.4.0
compactmachines3-1.12.2-3.0.3-b169
Controlling-3.0.5
CyclopsCore-1.12.2-0.10.24
DankNull-1.12-1.2.19
deepresonance-1.12-1.4.9
diethopper-1.1
Draconic-Evolution-1.12-2.3.6.275-universal
ElecCore-1.12.2-1.8.433
ElevatorMod-1.12.2-1.3.5
embers-0.230
EnderStorage-1.12.2-2.4.2.126-universal
Exchangers-1.12-2.5.2
extrautils2-1.12-1.7.2
ExtremeReactors-1.12-0.4.5.44
FoamFix-1.12.2-0.8.2-Anarchy
forestry_1.12.2-5.7.0.217
Forgelin-1.6.0
FTBLib-4.2.5
FTBUtilities-4.2.4
generators-0.9.20.9-mc1.12.2
gravestone-1.10.0
Hwyla-1.8.23-B38_1.12
industrialforegoing-1.12.2-1.6.4-111
instantunify-1.12.2-1.0.7
InventoryTweaks-1.63
ironchest-1.12.2-7.0.34.820
itemscroller-1.12.0-0.11.0
jei_1.12.2-4.8.5.138
jeiintegration_1.12.2-1.5.1.36
journeymap-1.12.2-5.5.2
JustEnoughResources-1.12.2-0.8.6.33
LLOverlayReloaded-1.1.4-mc1.12
Mantle-1.12-1.3.1.21
mcjtylib-1.12-2.5.0
MCMultiPart-2.4.1
MmmMmmMmmMmm-1.12-1.14
modnametooltip_1.12.2-1.10.0
MouseTweaks-2.8-mc1.12.1
NetherPortalFix_1.12.1-5.3.13
OptiFine_1.12.2_HD_U_C7
p455w0rdslib-1.12-2.0.24
Pam's HarvestCraft 1.12.2a
Psi-r1.1-59
QuickLeafDecay-MC1.12.1-1.2.4
rangedpumps-0.5
RedstoneArsenal-1.12.2-2.3.8.21-universal
RedstoneFlux-1.12-2.0.1.2-universal
refinedstorage-1.5.29
refinedstorageaddons-0.2
rftools-1.12-7.15
rftoolsdim-1.12-5.05
sampler-1.73
StorageDrawers-1.12.1-5.3.3
SwingThroughGrass -1.12-1.2.1
TConstruct-1.12-2.8.1.49
tesla-core-lib-1.12-1.0.12
theoneprobe-1.12-1.4.19
ThermalCultivation-1.12.2-0.1.3.11-universal
ThermalDynamics-1.12.2-2.3.8.16-universal
ThermalExpansion-1.12.2-5.3.8.38-universal
ThermalFoundation-1.12.2-2.3.8.22-universal
UniDict-1.12.2-1.8
WanionLib-1.12.2-1.3
zerocore-1.12-0.1.1.0

Chisel is causing you lag simply by being installed? With none of its blocks placed? This seems highly unlikely.

I'm seeing the same issue. In an instance with only chisel installed I get 30fps max with it enabled vs 50 fps max with chisel disabled. If I add it in an instance with other mods the game becomes unplayable.

Please, anyone experiencing this issue, I cannot do anything with "yes this also lags me." If you want to help solve this issue, profile your game and give me the snapshot. https://visualvm.github.io/

I was assembling a modpack to use with my friend and he has the exact same issue. We were very confused as to why he was lagging, as his computer is better than mine and I get 60FPS with the modpack, yet he's down to 2FPS. After testing, we found it was Chisel/CTM and he went back to 100FPS +. It is a very odd situation because it only seems to happen on his computer (And a couple users that posted here).

His specs:
AMD Radeon R9 280
22GB of RAM (10GB Dedicated)
8x AMD FX-8320 CPU

might be an AMD thing, I've noticed that their cards often have issues. A slight fix is to toggle the VBOs setting in Video Settings for AMD users. Something about OpenGL's public compat instructions being dodgy, while NVidia has a backend method that actually works

Hmm, maybe AMD should get on the ball to fix that obvious issue...if that's the case, which I doubt highly, but that is neither here nor there.

The only time I get lag and then a freeze up of the game completely is when first starting up a new world and breaking down a wood block. Breaking anything else yields nothing. Animals in the game don't move, or in a sense, freeze up. You can't kill anything because even if you click on an animal nothing registers. The only things that still work are the time in the game, the sun still moves and the clouds still move. Trying to close the game will cause it to freeze up and eventually crash to your desktop.

Out of 100 mods that I have, which the list will be provided at a later time because I'm at work right now, that will cause the amount of FML Spam is this one and Mystcraft. The only difference is that before I installed Chisel, with Mystcraft already installed, the game worked just fine. After installing chisel and CTM the game crashed (not so much crash as freezing up completely when trying to hit the close button on the top right of the program). Looking at the FML Log file, I hit CTRL + F and typed in Chisel and found an enormous amount of Log Spam for both Chisel and Mystcraft, though this is more likely Chisel than anything else Mystcraft related even though I put an issue up on their page as well just so I can cover my bases. This is the error mentioned in the issue below. Not sure if this helps out at all.

Edit: I think it might be CTM causing the issue rather than Chisel itself since CTM is the library mod and Chisel just uses that library mod to work. Not too sure in either case, just a hypothesis.

Re-Edit (4:55pm): After taking out Chisel and CTM I'm now getting massive spam log about Brad16840's Backpacks mod... -_- Fat chance he'll respond to any thing since he has no issues area nor a comment section. Well I just get rid of that mod and add back chisel and ctm to see what the real problem is.

Re-Edit (5:23pm) Backpacks was the problem. It seems that both CTM and Chisel function alright for now.

#637 - A duplicate issue, though it's for 1.11.2.

EDIT: I have a feeling this issue is unrelated to mine though, tell me if I should open a new one

Hey, old issue but I actually just experienced it myself, BUT on the server!

So I have a big kitchensink pack with CTM&Chisel being part of it, however if Chisel is installed it causes the server to have TPS lag spikes every now and then.. without it it's fine.

Here's a sampler file.. although i doubt it is of much help.. at least to my eyes there's nothing special to be seen there.

https://github.com/DeadSix27/mc_stuff/releases/download/1.0/sampler-snapshot_0.zip

[15:19:53] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 5662ms behind, skipping 113 tick(s)
> sampler start
[15:19:58] [Server thread/INFO] [minecraft/DedicatedServer]: The sampler has been started.
[15:20:38] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 4133ms behind, skipping 82 tick(s)
> sampler stop
[15:21:59] [Server thread/INFO] [minecraft/DedicatedServer]: The sampler has been stopped.
> sampler export
[15:22:23] [Server thread/INFO] [minecraft/DedicatedServer]: 11425 samples have been exported to /home/frozen/mcserver_modded3/sampler-snapshot_0.nps.