Describe the Bug

mc 1.18.1
forge 39.0.0

only create and flywheel mods installed:
create-mc1.18.1_v0.4a.jar
flywheel-forge-1.18-0.4.1.jar

Placing a create basin and then teleporting away so the chunk gets unloaded increases the mean tick time from ~7ms to 50+ms
teleporting back to the location of the placed basin will normalize the mean tick time but the chunk in which the basin has been placed has a sky light level of 0

Reproduction Steps

1. create a new world
2. check /forge tps ensure it has normalized (all loading/generating done)
3. teleport to a location away from spawn (eg 1000, 1000) that the location is generated
4. check /forge tps ensure it has normalized (all loading/generating done)
5. place a basin
6. teleport back to spawn location
7. check /forge tps, repeatedly - mean time will increase more and more, sometimes to over 50
8. teleport back to you basin, mean time will normalize, but sky light may break

Expected Result

• no mean time increase when unloading a chunk
• skylight should not break

Screenshots and Videos

broken light

broken light debug screen

Crash Report or Log

No response

Operating System

windows 10

Mod Version

0.4.1

Minecraft Version

1.18.1

Forge Version

39.0.0

Other Mods

create-mc1.18.1_v0.4a.jar

Additional Context

profiling started before teleporting away from chunk with basin

• with my basic understanding it seems unloading causes the mean time issue
  2021-12-13_10_37_35-test-1_18_1.zip

remark: pillaring up above the "flywheel light chunk" will fix the daylight
remark2: TPS issue may also be a forge / 1.18 issue as we discovered this even before using create/flywheel - but using the basin it was 100% reproducible

It looks like you have Simulation Distance set to 12. The default is 10. I also have it changed, setting it to 16 to match View Distance, which I increase because 10 is way too short. It wouldn't surprise me if having it changed from the default of 10 (you couldn't change it in 1.17 and earlier) causes this issue.

@Pewmaymen
Simulation distance seem not affect the issue. Using same render as simulation distance, or other combinations still shows the issue. Increase of the render/simulation distance on servers may be a problem as it may struggle keeping up with the demand if several people online. So this is not a viable solution nor workaround.

Validation Update:
used flywheel-forge-1.18-0.4.2-rc.jar in combination with unreleased create sha: 521102556a7bcefea6a988b305c3ef9d53b615cc
So far not able to reproduce the light issue (5/5 times tested), but the mean tick time increase is the same

Checked using:
Flywheel: 3e8644c
Create: Creators-of-Create/Create@9897666

No Mean Tick Time issue
No Light Issue

Tested using singleplayer / multiplayer