Bug 109382

Summary: RX Vega M GL performance and stuttering issues
Product: Mesa Reporter: princetonf
Component: Drivers/Gallium/radeonsiAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact: Default DRI bug account <dri-devel>
Severity: major    
Priority: medium    
Version: 18.3   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description princetonf 2019-01-18 12:59:34 UTC 
OpenGL renderer string: AMD VEGAM (DRM 3.27.0, 4.20.3-arch1-1-ARCH, LLVM 7.0.0)
Dell XPS 9575


AMD's discrete GPU on the Kaby Lake architecture performs significantly worse under Linux than under Windows. Below are some rudimentary data I've collected:

Game			Linux		Windows
TF2			30-50 FPS	60-100 FPS
Borderlands 2		30-43 FPS	42-52 FPS
Minecraft		60+ FPS		40-50 FPS
CSGO			40-55 FPS	60+ FPS

Notably, Minecraft is the exception, performing much better under Linux for some reason. 

All of the Source engine games (CSGO, TF2) I tested also had a very severe stutter, which would happen every other second.
Comment 1 GitLab Migration User 2019-09-25 18:48:49 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1369.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.