DarkRTA
commented
5 years ago I tried a couple of environment vars to see if I can fix this with with no success.
PROTON_USE_D9VK=1may improve things slightly but it crashed on my machine due to Intel Haswell having incomplete Vulkan support.PROTON_NO_ESYNC=1made the problem considerably worse.PROTON_NO_FSYNC=1had no noticeable effect.
Anything I haven't tried either will not affect load times or isn't applicable to this game. This more than likely seems like an issue with synchronization being really slow.
Edit: I looked into this a bit more and it seems to be doing over 50,000 context switches per second while loading. This is definitely seems to be part of the bottleneck.
First off, thank you very much for your work on Proton, excellent to see Linux support for more games!
SWB2 has a bug which makes loading times before starting a match really long. In single player mode, this means that loading a game goes from 5-10 secs (Windows) to 60-100 secs (Linux). Additionally, this breaks multiplayer mode, because the game times out when trying to join a match, making it impossible to play.
This bug is a long-standing one in Wine, with a report from 2012 here. It appears there is a recent (Jan 2018) patch at the very end of that thread, which I have not tested but according to the comments there seems to fix this issue. Maybe worth looking into adding it to Proton?
Thank you for looking into this!