Unexpected poor dedicated GPU performance on Linux

Citra Support
#1

Issue:
The performance is way below expected with a 1660Ti, game playable on my internal GPU.
I run the game throught PRIME. Installed the last drivers and followed directions from the official arch wiki to install nvidia drivers.
Now I know in some cases the integrated GPU can give better performances than dedicated but this is really a huge cap regarding the power of a 1660Ti on a emulator like this.
In any case this is an issue and my laptop heat up a lot while running citra on the CPU.

This is not the case on Windows.
I tried Ubuntu but I can’t get PRIME to work properly so I can’t give results using dedicated on Ubuntu

System Information
It’s a Asus Zephyrus GA502DU laptop

  • Operating System: Archlinux on Linux 5.6.15
  • CPU: AMD Ryzen 7 3750H
  • GPU: NVIDIA GeForce GTX 1660Ti Mobile with Max-Q design
  • Citra Version (found in title bar): Nightly 1554
  • Game: Monster Hunter Generations
  • Screenshot of Issue (I don’t have any title bar so I screenshoted the about window):
    with nvidia dedicated : https://i.imgur.com/KI1n4ep.jpg
    with amd integrated : https://i.imgur.com/z4LlvoC.jpg
    (60fps hack shoudn’t be a problem here)
#2

In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.

#3

Diagnostic Log
with nvidia dedicated : https://gist.github.com/edricus/03994df63c956ec4752fcdada27cb1a3
with amd integrated : https://gist.github.com/edricus/18a1c135c55d05763d99b3f4c50a2235

#4

I have the same problem but in my case both of the GPUs are from AMD. Vega 8 for integrated and Radeon 540x for dedicated

#5

Please start your own topic post and upload a log file.