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[Help, Resolved] Euro Truck Simulator 2 is not running full speed on Steam Deck. (sopuli.xyz)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

11 comments fedilink hide all child comments

I am aiming at 60 FPS, but I am struggling to keep it at any settings.

I have performance UI brought up, and I have noticed this. Presets:

Ultra -> ~30FPS average, 90% GPU usage, 40% CPU, 65°C
High -> ~45FPS average, 80% GPU usage, 30% CPU, 60°C
Medium -> ~50FPS average, 40% GPU usage, 30% CPU, 50°C
Low -> ~50FPS average, 20% GPU usage, 20% CPU, 40°C

As you can see, I cannot reach 60 FPS in-game even at the lowest preset.

What can I check/do in this case? The Linux binary is being used.

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[–] [email protected] 11 points 9 months ago (1 children)

The linux binary is being used.

Try Proton. Currently, Proton is much more developed than the Linux support for many game engines.

[–] [email protected] 8 points 9 months ago* (last edited 9 months ago) (3 children)

Under Proton 8.0 presets (DirectX11 renderer):

Ultra -> ~50FPS average, 100% GPU usage, 40% CPU, 70°C
High -> 60FPS average, 90% GPU usage, 30% CPU, 55°C (When uncapped ~70FPS average)
Medium -> 60FPS average, 50% GPU usage, 25% CPU, 55°C (When uncapped ~120FPS average)
Low -> 60FPS average, 20% GPU usage, 20% CPU, 40°C (When uncapped ~160FPS average)

Yeah, looks like the official Linux build of the game is not as optimized as I tought.

[–] [email protected] 5 points 9 months ago

Proton DB agrees, use proton experimental

[–] [email protected] 2 points 9 months ago (1 children)

Unfortunately, it's pretty common for the linux version to have optimization issues and perform worse than the windows version through proton.

It does really highlight what a great job the various proton/wine/dxvk/etc projects have done with running windows games efficiently though.

[–] [email protected] 3 points 9 months ago

It struck me as odd actually, as I have always believed this to be a beautifully optimized game (it still use). I've used the Linux build on my laptop (with propritary NVIDIA) and runs exactly like the Windows version.

On Steam Deck under Proton I am now using the High preset, then manually maxed out environment quality, weather quality and population and still remains at fixed 60.

[–] pantherfarber 2 points 9 months ago (1 children)

The Linux build uses OpenGL so its slow. The windows version through proton will use Vulkan which is much faster.

[–] [email protected] 3 points 9 months ago (1 children)

The fact that it's OpenGL matters little. It is a misconception that Vulkan is faster. But in this case, their implementation does seem slower.

[–] hydroel 1 points 9 months ago (1 children)

Isn't it true specifically on Windows, because the Windows implementation of OpenGL is lacking, but false on Linux?

[–] [email protected] 1 points 9 months ago* (last edited 9 months ago)

Windows integrates only very early versions of OpenGL (just kept from the 9x releases). Any modern release is implemented by the driver of your 3D accellerator/video card.

OpenGL on Windows has always been kinda of a disaster (NVIDIA's a little less, but AMD and Intel's are just abysmal), DirectX support being more developed is night and day.

Linux is pretty much OpenGL's home. But a lot of applications just are not optimized well enough to show it. Vulkan being faster is just because the software using it have cleaner codebases for being newer.