I installed Kubuntu 20.04 yesterday and I have noticed that my CPU usage is really high. It's not high when idle but even a simple mouse moving across the sceen will raise percentages on each core.
I upgraded from from Kubuntu 18.04 and noticed some performance issues so decided to upgrade.
I can't be sure if it was a similar issue but It happened after I resized my Partition to use all the space on my SSD. I had observed some issues but didn't check deeply and I was gonna upgrade anyway so wiped the drive completely
Currently 20.04 starts fine but the performance degrades the more I use it. It's at the point where I struggle to write code in VSCode because the delay is too high and the scrolling is choppy.
In Firefox the speed of starting a window is slow and opening a new tab and completing a search takes a long time.
While programming the project's development server takes too long to refresh after saving a file and reloading windows in Firefox is too slow.
It all seem to point to the high CPU usage thing, the RAM usage is fine and I didn't install anything out of the ordinary(maybe I did that doesn't work on 20.04 well).
I had noticed speed issues right after installation but they seemed to go away after a shutdown, but it still gets slower the more I use my laptop. It's unusable after an hour usually.
Now looking for solutions I haven't found something similar yet, any help will be much appreciated.