High CPU Usage Premiere Pro

[NitroDesign]

Ive posted This already but i guess due to editing my subject line, it got no views. So two weeks ago i started PR Pro (after a about 3 months not using it) and with anything i did in the program except, my CPU immediately shot up from 350% to 700% usage and everything lagged horribly.

I use a fully speced 2017 Mackbook Pro

Trouble shooting done: On/Off (reboots and stuff), update to latest, clean reinstall, cache, footage/projects (different footage, proxis, empty project), turn off otther programs (still cant count that out 100%), disconnecting from everything (drives, dongles, wifi, bluetooth), downgrading to 2019 etc.

Nothing helped.

Any idea?

[Michael Grenadier]

do you have plenty of empty space on your startup drive (at least 20% empty).  I strongly recommend that you make a bootable clone of your startup drive which you'll be able to restart from and run diskuntility on your startup drive.  If you've got diskwarrior, I'd run that also.   How much ram do you have and how are your premiere preferences are set up for RAM.

[NitroDesign]

i took a day to test my Macbook pro:
- cleaned it out (data, caches, run full CleanMyMac check)
- made space on my SSD (got 50% free space) and freed up ram
- reset PRAM, NVRAM, SMC
- booted in Hardware Test Utility and found no problems
 
Nothing helped. After Effects, Resolve and other "heavy" programs like Cinema 4D work perfectly fine. Only Premiere is going nuts.
I also tried every possible change in the premiere pro settings. Nothing

I have yet to:
- do a clean mac OS reinstall

- make a bootable clone to test my hard drive but i doubt its a hardware problem because premiere pro is the only programm acting up