Hey, I very recently switched to Linux and wanted to see how OW will perform. I can say aside from a few stutters in the menu, the gameplay is 100% smooth (ultra 160fps). I would say it’s even more smooth than under windows for me, because since I switched to an AMD GPU I have quite substantial fps drops the first few minutes after starting the program (80-160). Not with Linux. 9/10, can recommend!
I haven’t investigated, but I suspect the .mp4 failure is due to lack of Wine support for the API used by Overwatch, and I suspect the .webm failure is due to a bug in Overwatch code. It used to work.