- some weird crashes during work
- 100% crash during startup if trying to start on non-primary monitor
- some other visual glitches
All this I tried to debug for a while, found some of the GL functions that fail and got a solution from s3d guy's in a way of disabling native GL and moving to angle by setting env variable QT_OPENGL=angle. It became obvious this is not S3D only issue as same problem I had with PrusaSlicer and IdeaMaker too (they don't support angle so that hint did not help for them)
finally I found the actual reason for the problem and a real solution that solved everything
problem is nahimic service that is a POS that just don't work that installs with realtec sound driver... disabling the service solved all my issues with s3d (and a bunch of issues with prusa slicer, ideamaker, dxo photolab, davinci resolve ...)