https://www.youtube.com/watch?v=lTScQ7W39yc

I'm not sure if something has changed in the mesher, but it's the first time I get full speed export on Linux. (Is the API opengl resolved the thread bottleneck ?)
16M tris generated in less than 5sec.

Pop OS cosmic - MoI installed using steam - proton experimental

Using opengl option, I can't see any UI glitches when modeling. Only trouble was the format selection in the export file window. (I had to use the arrow key to select the format) ... I'm pretty sure it's an OS problem (cosmic is still under beta).

Overall this finally seems like the linux desktop year (at least for me :O))