After reading your post and re-looking at the posted photo, I realized that cstandar03 is probably misreading the %CPU table i.e. that the system is 91% busy instead of 91% idle.
FWIW even when I have several apps active: Foxfire, Mail, Activity monitor, Intel Power Gadget, etc. my 2018 i7 Mini is usually 90+% Idle.
GetRealBro