Hello,
Fresh install of CrossOver 15.1.0 and MechWarrior. GPU not recognized but game loaded fine, patched ok.
Frame rate was so bad game was not playable. Tried changing many in-game video settings with little improvement.
Strangely enough I un-ticked "Performance Enhanced Graphics" under Bottle Settings, and there was considerable improvement in FPS . Almost playable now and graphics are good from what I could tell except for one thing. In "Testing Ground" area all enemy mechs were yellow ! To add to the puzzle, when shot, enemy mechs would turn darker with each shot until almost their correct color .
Did not go into QuickPlay but from my experience, FPS takes a hit when in a group.
Running a low power computer but MechWarriorOnline runs fine on my Win 7.
I will update if I can improve anything.