Premiere Pro is so slow on my IMAC PRO

[Shovra5C2B]

With the specs on this computer, I do not know why, playback is so slow. 

[Ann Bens]

We neither.

FAQ: What information should I provide when asking a question

[Warren Heaton]

The most common culprit when it comes to slow playback (or laggy playback) is the storage media not being able to keep up with the sustained data transfer required of the source footage.  For example, a DV-NTSC clip requires 3.6MB/second for smooth playback.  If the storage media cannot maintain that then playback will lag.  Of course, you're more likely to have something like 1080p Apple ProRes422 HQ which should=play fine on a standard USB3 external drive (provided that the drive isn't too full), but it's unrealistic to expect it to play from a USB2 drive.  Then again, frames sizes are getting to much larger than 1080.  The internal Flash stroage of the iMac Pro is exceptionally fast, but more than just playback will lag if the Macintosh HD gets to be too full.

To check storage media bandwidth, download and run Blackmagic Design Speed Test (free): ‎Blackmagic Disk Speed Test on the Mac App Store

  Of course, there are other reasons playback can lag.  There was a time that Apple ProRes 4444 source in an Apple ProRess 4444 Sequence would lag.

As Ann Bens noted, more information is needed to troubleshoot your issue.

For what it's worth, I frequently work with Premiere Pro, Affects Effects, Photoshop, Illustrator and InDesign on an iMac Pro.  It's a great machine for Adobe applications. 

[Kartika Rawat]

Hi Shovra5C2B!

Sorry to hear that. We can get this checked.

• Can you provide your system details (OS, CPU, RAM, GPU)?
• Have you tried deleting cache files and resetting preferences?

Let us know.

Thanks,

Kartika

[mayjain]

Hi @Shovra5C2B ,

Can you also share the media details(Camera/codec etc.) or possibly a sample media if slowness is with specific files ?

Thanks,
Mayjain