Disabling ESYNC (PROTON_NO_ESYNC=1 %command%) seems eliminates crashes.

Make sure you installed all prerequisites it tried to install on first launch. Try D9VK.

I did install all of them though, .NET redistributable, DirectX, OpenAL, PhysX, just fine. I don't see how I can (easily) use D9VK through Proton though...

Hmmm I'll try that, did you see a big performance boost with that or what?

steam-13210.log

Tada!

Xlib:  extension "NV-GLX" missing on display ":0".
err:vulkan:wine_vk_instance_load_physical_devices Failed to enumerate physical devices, res=-3
err:vulkan:wine_vkCreateInstance Failed to load physical devices, res=-3

Vulkan failed to initialize, can you double check that you have vulkan drivers installed for your RX 580 with something like apt policy mesa-vulkan-drivers mesa-vulkan-drivers:i386? You can install them with sudo apt install mesa-vulkan-drivers mesa-vulkan-drivers:i386 if those packages are not already installed.

I have countless other games running 100% properly through Vulkan. I know that Vulkan is operational. For example, World of Warcraft, Rust, Elite Dangerous, and more.

mesa-vulkan-drivers:
Installed: 19.2.1-1ubuntu1
Candidate: 19.2.1-1ubuntu1
Version table:
*** 19.2.1-1ubuntu1 500
500 http://ca.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
100 /var/lib/dpkg/status

No, but I'll install that and try again.

Okay, installed mesa-vulkan-drivers:i386

Launched game, successfully, changed res to 1920x1080, then jumped into "Instant Action" deathmatch. Gmae crashed during load.

Added the log launch parameter and now the game doesn't crash going into instant action.

FPS seems better, but I still get a notable frequency of frame stuttering (generating shaders?), which reminds me a bit of how Overwatch behaves with shaders early on in DXVK's history.

So... works-ish, mostly?

Did you try PROTON_NO_ESYNC=1 %command% ?

So after I turned off frame smoothing, I was getting 200FPS, and after turning the details wayyyy up I get 90-120FPS steadily. I think that occasional frame stuttering might be part of the D9VK process, but I have no proof of that (speculation).

Is anyone able to play online? The game stays on "Connecting..." when trying to connect to most servers. I suspect this being some kind of anti cheat that is not compatible with Wine (latest Proton 5.0-4 in my case).

Is anyone able to play online? The game stays on "Connecting..." when trying to connect to most servers. I suspect this being some kind of anti cheat that is not compatible with Wine (latest Proton 5.0-4 in my case).

Yes, it works. You need this patch: https://www.mediafire.com/download/pi328fi0c1dsqzs/UT3SteamPatchGS_21.exe
Just add it as a non-Steam game, run it with Proton & apply the patch.

You can read here why the patch is needed: https://forums.epicgames.com/unreal-tournament-3/ut3-general-chat/298638-gamespy-patch-info

This game's frame rate is 40 to 50% less than on windows when played through Steam play. When using Bottles and not launching the game with Steam, that is Steam is not involved/not running, the frame rate is around 20-30% less than when played on windows. The game also starts much faster when using Bottles than Steam play, Heroic game launcher, or Lutris.

I have not been able to identify why the game performs better via Bottles than other methods. I suspect it has something to do with dependecies. Also note that the performance gap between windows and Linux expands further if DXVK is used on windows, where the game sees a large increase in frame rate.

OpenAL and OpenAL Soft do not work, it always selects generic software. If I remove the OpenAL32 DLL from the game's folder, there is no sound. Regardless of whether I use the original OpenAL32 file or the OpenAL Soft file, Generic Hardware is selected. Setting a DLL override has no effect. If I check use EAX in winecfg it still does not work.

After installing the mingw OpenAL Soft for the windows target, I get sound if I remove the OpenAL32 DLL. But it still goes with generic software. The 3D audio is much worse on Linux.

When running the game on a Mac with Wine 5 through 7 (I have not tried later versions), OpenAL Soft works the same as on windows, no need for a DLL override or anything.

I tried using older Wine forks, Proton versions down to 7, and Wine staging 9.9, no change.

In trying to get OpenAL and OpenAL Soft to work, in Bottles dependencies list I installed dsound.dll, which should not do anything. Interestly the game's log now reads Generic Software Compatibility Mode instead of Generic Software, however they both have the same terrible result.

The game does not seem to be able to probe audio devices.

After updating my system, Nobara Linux, I typically need to enter the product key for this game again. Doing so results in a different hash in Engine.ini. Is this do to an encrytion library update? Is there any way to maintain the same hash?

Running the game via Steam play now has performance at the level of running the game via Bottles. Still far below windows.

OpenAL/OpenAL Soft 3D audio still does not work.

HURAY! After updating OpenAL Soft to version 1.24.2 the 3D audio now works, seemingly all good. More play testing. It still does not work with hardware OpenAL.

The game's performance on Linux is still poor and worse on Gnome than KDE Plasma here on Nobara.

There is an enormous performance regression using later Proton versions than Proton 9.0-4. :(

Also it turns out older versions of OpenAL Soft do work. I hadn't accounted for Steam overwriting the DLL.

Diagnostic
https://gist.github.com/Gibitwit/1a43002df9497188baf0c32457db94ea#file-gistfile1-txt

steam-13210.log

@Gibitwit performance should be better in proton experimental bleeding-edge

Good to hear. Unfortunatly I will not be able to test it anytime soon. My system configuration has changed greatly and I do not have a Linux installation at the moment. It will probably be a while.