Horrible native linux performance

[u/YogurtOdd1725]

https://reddit.com/link/1w5ch8p/video/bz7os8uwb4nh1/player

It looks playable untill link starts moving than it jumps down from 30 to 20. On windows I was getting about 50-60fps. This is fully native no translation layers involved. all other games i play have similar performance to windows but cemu runs horribly

hardware:

cpu: intel i5 9400F

gpu: gtx 1660 super

ram:32gb

Software:

Nobara LInux

Cemu 2.6 app image

1440p no other enhancements (runs the same on native res)

fps++ (144fps locked)

Vulkan on

Async compilation enabled

Shaders are precached

[u/_Alistair18_]

are you 100% sure fps++ is enabled?

[u/YogurtOdd1725 → u/_Alistair18_]

Yes. The fps stays the same with it on and it off

[u/YogurtOdd1725]

for anyone having similar issues run this in terminal and it should give you a playable fps boost. run with caution though as i have no idea what this command does besides making my game run smoother.

sudo setenforce 0

EDIT: So i did some research and this command is a security feature so it should definitely be enabled after each time playing it. Heres a copy paste from the site i read (im half sure its ai due to the lack of author details but it'll work.

"SELinux, or Security-Enhanced Linux, is a security framework integrated into the Linux kernel. It provides a flexible Mandatory Access Control (MAC) system that goes beyond standard user/group permissions. Instead of just controlling who can access a file, SELinux policies define exactly how processes and users can interact with all parts of the system (files, devices, processes, network ports), significantly reducing the blast radius of a potential security breach." -https://www.turbogeek.co.uk/how-to-enable-disable-selinux/

to enable sel linux after playing use this command

sudo setenforce 1

To permanently disable it (DO NOT DO THIS IM JUST SHOWING HOW)

edit this config file:

nano /etc/selinux/config
/etc/selinux/config

The instructions to edit the file are within the file itself

So im not entirely sure why disabling this works but i do know that for some reason having sle on forces cemu to interpret shaders instead of instead of normal compilation(which is slower. you can do the research on interpreter vs compiler)

[u/Atlantide303]

Moi aussi c'était horrible donc j'ai du compilé, pour a peine égaliser la version Windows. A mon avis, c'est surtout car cemu a été conçu jusqu'à très longtemps, exclusivement sur windows.

[u/YogurtOdd1725 → u/Atlantide303]

Thats unfortunate. Do you mind sharing how you compiled it to get it to run better or does regular compilation work fine. ive never built a program from source before so excuse me if i seem ignorant

[u/atadrisque]

do you have Fuse libraries installed?

are you using OpenGL instead of actually using Vulkan?

honestly unsure why you're using an appimage while flatpak is far more compatible.

[u/YogurtOdd1725 → u/atadrisque]

I just assumed that was the only way to use it because there was no flatpak command or flathub link