Experiencing this as well on the latest proton.There's one thing that makes Odyssey totally unplayable for me under Proton (tried all latest versions, including GE, from 5.0 - 6.5). If I open and close the Galaxy or System map while staying on the station, I get 1-2 FPS at max after this. The only way to fix this is to restart the game completely. I don't have Windows installed to check how the game works there (and don't plan to install it just for it). It drives me crazy because overall the game is playable, and only the map bug breaks the whole experience. :c
My system specs:
Single monitor (2560x1440)
GeForce GTX 1060 6 gb
Ryzen 5 1600
16 gb RAM
Does anyone have the same problem?
I've found a sort of work around for this. Switch to System map, let it load and switch back to cockpit view. Might take 2 or 3 tries but it usually switches back to my normal fps afterwards and is way better than having to restart the game every time.
Still would be interesting to see if this is a proton only issue.