Premiere Pro runs very slow in iMac 2017, playback hangs all the time

[bartW]

I'm editing our company movie in Premiere Pro with 4K footage. I never get a nice playback. I only see frozen images, one after the other... This makes it impossible to work on this project. Even in the source palette the preview of the clips doesn't work at all. The project is running local (on my iMac). What's the problem here? Is my iMac powerful enough?

iMac (Retina 5K, 27-inch, 2017)

Processor: 4,2 GHz Quad-Core Intel Core i7

Memory: 16 GB 2400 MHz DDR4

Video card: Radeon Pro 580 8 GB

Can someone help me out here pls?

Bart

[Sumeet Kumar Choubey]

Hi Bart,

We're sorry to hear about this. Are you still experiencing this issue? If so, let us know the specifications of the media files (format/codec, frame rate, frame size & source) with which you are experiencing this issue. We're here to help, just need more info.

Thanks,

Sumeet

[bartW]

Hi Sumeet,

even after a week COVID-quarantaine, still the same issue.

I'll try to give you some details of the project i'm working on:

- Codec: Apple Pro Res 444

- frame rate: 50 fps

- frame size: 1920 x 1080 

- source: (you mean the original footage?) Filmed by a pro: 4K Sony LOG2 an LOG3 > MP4 files

[Baffy19]

Check here. It may help solve your problem.

Major Issues with Premiere - Adobe Support Community - 12729096

[bartW]

The video preview has always been Quicktime... so i don't think this is the problem. 

Thanks for your attempt to help me out here.