so i noticed that my computer has two "system" process
1. "system"
2. "system idle process"

What is the difference - why are they both running at 50% - i tried google and the system idle process seems pretty normal but having a hard time finding info on the other as the word "system" in searches are usually linked to the idle process.

reason why i ask is that the computer starts running like shit after 1 - 2 days worth of use.

Thanks


pic for reference.