Looks like what my problem disappeared after some of the latest commits (glsl
related?). Two days ago i disabled HyperZ via env vars and lockups in minecraft
gone. But today i updated from git and enabled HyperZ to see if that happens
again, but everything is good. If it necessary i can try to figure out what
commit fixed this. Still have some quite rare hangups in some cases but it's
not critical as they quickly gone. Strange. Thank you anyway.