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csselement
csselement
Known Participant
May 21, 2025
Question

Why is Premiere using 100% CPU while doing nothing?

  • May 21, 2025
  • 4 replies
  • 481 views

Premiere Pro v. 25.2.3(Build 4)

Apple MacBook Pro M1

 

After wrestling with horrible UI lag, I rebooted my Macbook and reopened Premiere. It's sitting at the 'welcome' screen with no project open, doing absolutely nothing of importance while running the CPU at 100% for over 15 minutes and counting. Can anyone explain?

4 replies

Bruce Bullis
Community Manager
Bruce BullisCommunity Manager
Community Manager
May 22, 2025

That was a lot of work! What suggested to you, that reinstalling MacOS would address the issue? 

Happy to look at a process sample...

csselement
csselementAuthor
Known Participant
May 22, 2025

Update: Formatted my computer, reinstalled MacOS. Still running one core at 100% just sitting at the Premiere welcome screen and it never lowers.

csselement
csselementAuthor
Known Participant
May 21, 2025

Thanks for your help, Bruce. I have a process sample ready to send.

I was having some UI lag problems with this update but nothing this bad. I can't continue working like this.

Bruce Bullis
Community Manager
Bruce BullisCommunity Manager
Community Manager
May 21, 2025

Has this version of PPro previously run without incident, on that system? 

Have you changed Prefs --> General --> At Startup from "Show Home", to "Open Most Recent"?

We'd be interested in seeing a process sample, taken (via Activity Monitor) while PPro is in that state. 


I'll DM you my address...

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