The issue was from updated libs in new Ubuntu version, but Steam used old, and Installation failed. I solved all Issues installing Windows back after several month of suffering
That Snap is true evil, I was naive, installed Docker from Snap. And it just hanged with 100% memory and cpu load. Normal version, worked perfect, better than on Windows.
I used Manjaro several months, it was good and fast, but that multimonitor issue was too much for me. I got used that Windows remember my windows when I switch monitors, but Manjaro can't do it. (I use PC + Laptop + monitor switcher, Windows handles it ok).
Download Silk.NET for free. About The high-speed OpenGL, OpenCL bindings library. Spruce up your games and applications with cross-platform 3D graphics, audio, compute and haptics. Fast, free, cross-platform.