Hey guys, thanks for all the replies.
Well, turns out I was only seeing my own processes.
After a little testing, what I see is that a process called "kworker/0:0",
"kworker/0:3" and "kworker/0:4" consumes a lot of CPU power, basically doing
nothing.
Xorg also appeared but it takes nothing major.
I will investigate this "kworker" process, but any help is welcome as always
:)
I will also try and run some root kit check ups to see if there is anything
weird. I don't think that is the case, but better be safe than sorry.