SOLUTION TO GAME CRASHES #6
Description
you cannot use the official marlow's crystal optimizer in your mods folder alongside system - just use the crystal optimizer module built in
you must use 1.21.1 or 1.21 only
you must include fabric api
you must use fabric loader
you should use version 1.5
close background apps by task manager to apps you dont use while launching minecraft that take up lots of background resources
if it still doesn't work, clear your temp folder.
windows key + r
%temp%
press ok
ctrl A
delete everything
retry