Extremely slow timeline performance

[John Deetz23]

Hey all, I just finished working on a long project and my timeline is at about 50 minutes of media.  I rendered and exported my project but now have to go back in and make more edits but the timeline is lagging extremely bad.  Hitting play takes a good 5-10 seconds to actually play and really doing anything in the project is extremely slow.  Same effects I use in all my other projects, Lumetri Color, a few audio plugins that have been rendered already, and just a few transition effects.  I've tried a new sequence, new project, clearing cache, and just about every performance setting but same issues happen.  I edit in Premiere every day and never have any issues like this.  This project was much longer than my normal work but don't think that should really make that big of a difference with my system.  I've tried opening other projects and they all run like normal.  Any help would greatly appreciated!

System Specs:

Windows 11

AMD Ryzen 9 5950X 16 Core

32GB RAM

Nvidia RTX 3080

Seagate 2TB External SSD

[Carlos Ziade]

did you try to update your Nvidia to the latest studio driver from Nvidia's website?

try to reset the preferences and check your renderer if it is hardware acceleration or software only...

what type of footage are you working with?

are you editing on an external drive or local drives? try both to narrow down the culprit...

[John Deetz23]

All drivers are updated and using hardware acceleration.  Just working with 1080p 30FPS footage like I normally do.  I am editing on an external 2TB SSD which I use for all my projects and never have any issues.

[John Deetz23]

One thing I did notice was, while having the project open, task manager is showing my system RAM being maxed out but when I open any other project that isn't as long it's only using about half of the RAM.  Not sure why that would be happening on one project and not the others.  Can't imagine that it being longer in length would make that much of a difference?

[Carlos Ziade]

lets try to reset premiere pro preferences...

if this doesn't make any difference, try to move

your editing workflow locally and check scratch disks locations...

also, try to delete render files from sequence

[John Deetz23]

Yeah, tried all that, unfortunately still no luck, still getting a lot of lag in the timeline and just slow performance all around in this project, even trying to open it takes awhile.

[Sumeet Kumar Choubey]

Hi John Deetz23, 

Are you still experiencing this issue? If so, could you please confirm how much memory is allocated to Premiere Pro under Edit > Preferences > Memory? Also, let us know Premiere Pro's memory utilization in the task manager when things slow down.

Thanks,

Sumeet