I used Steam / Proton to play Elex, and I didn't have any problems, but I remember reading several time that there was a graphical setting to lower, to be able to play correctly. I don't remember which one, but I think it was shader quality, or shadows quality. Maybe try to lower those settings and see if the problem still occurs ?

Also, at least with Proton, the first time you launch the game, shaders need to be compiled (whatever that means ), and if you start playing immediately, it can cause stuttering.

Thanks furaxhornyx for your time. I tried the settings at their lowest value, but nothing changed. The fan speed is controlled by the driver, isn't that true? How can the game bypass that. I don't know. Very strange...

Does it help if you run the game with gamemode? Maybe setting the GPU to performance mode explicitly makes it behave more consistently.

I don't think the game is bypassing anything. I guess it's just stressing the GPU in a strange pattern.

Hey tuubi. Isn't gamemode only for native linux games? Can I use it under wine? Thank you very much for your input.

I don't see why gamemode wouldn't work with Wine games. Try this:
gamemoderun wine whatever.exe

I used gamemode and the game hangs on a black screen. Sometimes computers can drive you crazy!...

Maybe you can try CoreCtrl to tweak your GPU performance profile ?

Also, if you have an "overclocked edition" of your GPU, maybe you can try setting frequency and voltage back to "factory" settings (look for your GPU model on AMD site, the specs should be there). I know I've had some trouble in the past with some OC edition of GPU (granted, I was using Windows, but bad overclocking is bad on any platform).

Quoting: furaxhornyxMaybe you can try CoreCtrl to tweak your GPU performance profile ?

Also, if you have an "overclocked edition" of your GPU, maybe you can try setting frequency and voltage back to "factory" settings (look for your GPU model on AMD site, the specs should be there). I know I've had some trouble in the past with some OC edition of GPU (granted, I was using Windows, but bad overclocking is bad on any platform).

I had similar trouble with my old (factory OC'd) MSI RX580, but I didn't have to touch the frequencies at all. Just lowered voltages a bit and it stopped crashing and ran cooler. That convinced me to avoid MSI in the future.

Well, my card is not overclocked. When I ran the game with high settings the temperature does not go above 55 degrees Celsius (which I think is a normal temperature). I tried CoreCtrl but no difference. And I noticed that this behaviour continues after I quit the game and I am on the desktop. I must restart my computer for the fans to start behaving normally.

I doubt the specific game could alter anything about the fans behaviour - it's more likely they are just exposing something in the gpu fan profile by utilising it heavily. But of course, I could be wrong!

55 degrees celsius is abnormally low for running games. How did you measure this? Try MangoHUD overlay to see it in 'realtime' at load inside the game. It also gives you a bunch of other useful metrics, like CPU and GPU load. You can use goverlay to customise it conveniently, or just use the cfg files.

I can only speak for a Nvidia gpu (1070) but after I switched to Linux, I had to set my fan controls manually as the automatic setting basically meant they never went on (I discovered to my shock and horror). Now I have a 3rd party fan curve script that starts up at boot time and it's very aggressive giving me cooler temps yet more noise.

Just some quirks of gaming :)