I'm having by time to time problems with my OS running really slow because the System uses a lot of CPU (it stays like this ~30min). I've checked different articles on the internet in regard to this issue and none of them worked for me. I also tried to update from Mojave to Catalina in the idea that this might fix the issue.
Does somebody else encounter this issue?
Macbook pro late 2013 with OS 10.15.6 (19G2005)
2.3 GHz Quad-Core Intel Core i7
16 GB 1600 MHz DDR3
NVIDIA GeForce GT 750M 2 GB Intel Iris Pro 1536 MB
Is there a way of seeing the processes used or what is being done by the system? The Activity monitor or the htop from brew doesn't show what is being done by the system.
-- Answer (based on the comment from @At0mic): In order to see all processes including the system ones it possible by selecting in Activity Monitor View -> Show all processes