My Manjaro using computers performance is for some reason just only for like 1/10 of how it should be running

For some reason, my computer randomly drops to only 1/10 of it’s performance and I don’t know what is causing it. Do you have any tips how could I solve it? (all of my drivers are up to date).
When I freshly installed Manjaro and tried to run Minecraft 1.8.9, it ran on around 350-400 FPS, but then for some reason (the only things I installed after were Steam and Brave browser), my performance dropped only on 30-40 FPS. Then, two days after, I started Minecraft and everything runned as it should again, but the next day, the game was running again on only 30 FPS and it is still after nearly a week. Does anybody has any tips how could I fix this problem? Thank you so much!

Hi @jozef_papricka, and welcome!

In order for us, or anyone for that matter, to be able to provide assistance, more information is necessary. To that end, please see:

Hope you manage!

:bangbang: Tip: :bangbang:

To provide terminal output, copy the text you wish to share, and paste it here, surrounded by three (3) backticks, a.k.a grave accents. Like this:

pasted text

Or three (3) tilde signs, like this:

pasted text

This will just cause it to be rendered like this:

Portaest sed
cursus nisl nisi
hendrerit ac quis
tortor sit leo commodo.

Instead of like this:

Portaest sed elementum cursus nisl nisi hendrerit ac quis sit adipiscing tortor sit leo commodo.

Alternatively, paste the text you wish to format as terminal output, select all pasted text, and click the </> button on the taskbar. This will indent the whole pasted section with one TAB, causing it to render the same way as described above.

Thereby improving legibility and making it much easier for those trying to be of assistance.

:bangbang::bangbang: Additionally

If your language isn’t English, please prepend any and all terminal commands with LC_ALL=C. For example:

LC_ALL=C bluetoothctl

This will just cause the terminal output to be in English, making it easier to understand and debug.

Please edit your post accordingly.

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From my experience, Minecraft is not the best optimized game. That said, a FPS drop like that is very strange.

I suggest:

  • Check if your computer is plugged in AC while playing (in case of a laptop);
  • Install Optifine or similar, it will improve your fps;
  • Check if your system in not under heavy load. For example, if Timeshift is running at the same time;
  • Check if your CPU frequency is not being capped (affected by your governor);
  • Check if you GPU is being used.

This is a generic advice, for better advice more info is required, as @Mirdarthos said. Hope this helps.

Probably VSYNC/VRR is active? Did you notice any high GPU usage?