This option caused four different crashes with different culprits, one unknown. It's not really reproducible, just randomly crashes. I don't have much info other than the crash reports.

Minecraft: 1.12.2
Forge: 14.23.5.2860
LoliASM: 5.29
Java: Eclipse Temurin 1.8.0 (Java 8)
OS: Windows 10 64-bit

Attached are all four crash reports.

crash-2025-09-20_13.46.53-client.txt

crash-2025-09-20_14.28.24-client.txt

crash-2025-09-20_14.30.34-client.txt

crash-2025-09-20_14.30.50-server.txt

Hence why it’s marked as experimental and defaulted to be off. Thank you for the report nonetheless.

you're welcome. If you need more testing, I can post as many crash reports as you want.