Two days after doing this, the problems returned, only worse. I didn't install any fonts, just Photoshop and a few browsers.) I did NOT copy anything from either Library folder. (I then manually copied over my Documents with drag and drop. ![]() I tried a bunch of “fixes” that didn't work, so finally I decided to wipe my hard drive and reinstall a fresh copy of macOS Monterey. When checking Activity Monitor, SOMETHING is always taking up around 350% to 400% of the CPU. ![]() My GLACIALLY SLOW iMac has me at my wit's end. IMac CPU 350%, iMac glacially SLOW macOS Monterey Version 12.4 Let me know if you need further information. Is this GPU problem or HDD fan causing the issue? In fact every application i run cause high CPU usage. When I ran game (Dota 2) with low setting, the game stutter, my CPU usage is sky high at 90%-130%. Is there a way I can diagnos and check if my system is using my GPU? I suspect my GPU is not working. I have no way to know or test if my GPU is working Activity monitor GPU usage came out blank. My display seems fine, no stutter, no flicker So at this point the only thing left is GPU and this is where I'm at a roadblock. After 17hours of testing 4cycle everything was ok with no error. My initial assumption I might have corrupted the HDD therefore I replaced it. After rebooting, everything became slow even at desktop.Īfter running Apple hardware test it return error 4MOT/4/40000003:HDD-1212 It happen when my finder crash and I had to force restart using power switch. ![]() I'm unable to google anything relevant to my situation and the current lockdown situation isn't helping as all shop are closed in my country.
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