Describe problem (what you were doing; what happened; what should have happened):
Diamond spikes stop damaging mobs after a short time. I have a mob farm set up where mobs are directed to fall into a hole to be damaged by the diamond spikes and I stand to collect drops and XP. After a while, about maybe 15 minutes, it just stops working and mobs pile up. There doesn't seem to be any obvious reason.
Minecraft Version: 1.20.1
Forge Version: 47.1.43
Mod Version: 1.12.2
Single Player or Server: Single
Describe problem (what you were doing; what happened; what should have happened):
Diamond spikes stop damaging mobs after a short time. I have a mob farm set up where mobs are directed to fall into a hole to be damaged by the diamond spikes and I stand to collect drops and XP. After a while, about maybe 15 minutes, it just stops working and mobs pile up. There doesn't seem to be any obvious reason.
Log file link:
Video/images/gifs (direct upload or link):