Hi!

I’m trying to play SH3 with GWX mod in Linux (EndeavourOS) with Proton Experimental. I followed this guide for GWX 3.0 step by step to install the 4gb patch, GWX 3.0, and Ahnenerbe widescreen mod: https://gtm.you1.cn/sharedfiles/filedetails/?id=1803072674. Installing all of them worked fine.

The game can be launched without issues, depending on whether or not I have the widescreen mod activated, I see either its splash screen in native resolution (1920x1080) or GWX’s one (1024x768-ish). Once in game, I can start training missions as well as custom missions, although loading custom missions comes to a rest at 90 % for some time.

Trying to launch a patrol in campaign mode will cause the loading screen to proceed to 90 %, stay there for ~30 seconds, then crash to desktop. This is true with and without widescreen mod. This doesn’t happen without mods after a clean installation.

So far I tried the following to fix the game crashing:

1. Deleting any content in ~/.steam/steam/steamapps/compatdata/15210/pfx/drive_c/users/steamuser/Documents/SH3/
   
2. Running Wine in compatibility mode (Win XP and Win 7)

Step 1 was a recommendation I found here and there as an allround fix for this issue, although discussions were usually about Windows-based installations.
Step 2 came to mind after
from the aforementioned guide opened the dialog window allowing me to modify libraries and activate compatibility mode.

Does anyone have an idea what I can try to fix this problem?