Hello,

I would like to detail a simple fix I found. While I have posted about this before, I have found what seems like a more permanent solution.

The solution is simple, go to workspace behavior under the plasma settings program and go to desktop effects. Disable "blur" and "background contrast" then click apply.

Well done, you should now have a sane and reasonable experience with Plasma 5 on the Raspberry Pi 4/400.

If you wish to enhance your experience further, put

into ~/.profile as that should force kwin's window compositor to use GLESv2 (which tends to run better on many ARM devices including the Pi 4/400).

hm. I wouldn't try to use KDE on an RPi.

Nor Windows but they do it, at least he does not whine about the poor performance on under powered machine but offers a solution...