Minecraft version:1.16.5
Mod version:4.0.11-beta
These wrongly connected walls are most likely the cause of the low frame rate, please fix!
McJty commented
No that doesn't cause low framerate. Also it's unlikely I find the time to fix that on 1.16.5. The 1.18 version no longer has this problem but the fix isn't the same so can't easily transfer it