[Bug] Spectrometer = death freeze

[SAlexW]

Version of MC: 1.12.2
Memory used: 8gb.
Version of Forge: 14.23.5.2847
List of used mods / version of mod:
Optifine / HD U F5
Forgelin / 1.8.4
LibrarianLib / 4.20
Refraction / 1.9.11 (but this bug was also noticed on earlier versions of mod above 1.9.0.)
Description:
When I try to place spectrometer (without crossing the laser) into the world, the game freeze for 1-1.5 seconds. If I try to put the spectrometer in the way of a laser, or try to point the laser at an existing spectrometer, the game freeze absolutely. No errors, no logs, nothing but a game that can only be disabled through the task manager.

[shBLOCK]

I have the same issue...

[Mysticpasta1]

removing optifine or renderlib should fix it

[Mysticpasta1]

fixed in https://github.com/Mysticpasta1/TMT-Refraction