Timeline Window extremely laggy on secondary monitor

[Sylvain0D4D]

• Issue - A timeline that is responsive on my Main Monitor is extremely laggy on a secondary monitor.
• Adobe Premiere Pro version number: 2023.2.0 Build 69
• Operating system - macOS 11.7.4
• System Info: CPU, GPU, RAM, HD:

  • CPU: 2.3 GHz 18-Core Intel Xeon W

  • GPU and Driver Version: Radeon Pro Vega 64 16 GB

  • RAM: 128 GB 2666 MHz DDR4

  • Hard Drive (and, if external, how the drive is connected: USB 3, Thunderbolt, etc.).: G-Drive Pro Studio SSD 7.84 TB. Connected with Thunderbolt 3

  • Secondary Monitor: LG Ultrafine (firmware 3.04,1.13,5237,3.04,0.1e) Connected with Thunderbolt/Displayport.
• Video format: ProRes LT
• Workflow details: It happens with every sequence, whether single cam, multicam, with or without proxies. Basically source media doesn't appear to matter. It seems to be a UI issue.
• Steps to reproduce - 1: Timeline Window is responsive on main monitor. 2: Move Timeline Window to secondary monitor. 
• Expected result - Timeline should be as responsive as on the Main Monitor.
• Actual result - Timeline becomes laggy. When clicking on the Timeline, it can take up to several seconds for Playhead to catch up and frame to update. Scrubbing becomes unusable because it doesn't refresh fast enough. When I bring back the Timeline Window on the Main Monitor, playback is responsive again. 

This is apparenlty a software issue as I use other editing softwares (Avid and Resolve) and there is no difference between monitors for timeline scrubbing.

I provided a video to showcase the problem. I'm speaking in French during the video, but the problem is visually obvious.

I have taken the usual steps for troubleshooting: including restarting, trashing preferences, trashing media cache, updating the Premiere version, etc.

Thanks for your help resolving this.

[Kevin-Monahan]

Hello @Sylvain0D4D,

Thanks for the message. It’s been a long time since you filed this bug, and I apologize for the lack of a response. Are you still having this issue? Let the team know.

I'll move your post to the Discussions board while we await your information.

Thanks,


Kevin

[Sylvain0D4D]

Thanks Kevin, 

The issue is greatly improved with the recent Premiere updates which seem to focus on the issue of timeline performance. I also was able to update the Mac OS to the latest version which may have helped. 

Having said that, Premiere's timeline performance is still slower than Avid on my computer. Any further gains on that front would be greatly appreciated.

Thanks! 

Ps: Also worth mentioning, lowering the resolution (1/2, 1/4, 1/8) has never led to any noticeable increase of timeline speed on my system, which I find surprising. Any ideas why? (I work in ProRes) 

[Kevin-Monahan]

Hi @Sylvain0D4D,

Thanks for the info. Glad things have smoothed out for you a bit with the current version. As for the issue you have now, what kind of footage are you editing? Is the footage the same in Avid, or is it transcoded? As far as resolutions go, they should improve when you drop them to a lower res. I think I'd need to test that with the footage you are using, as well.

I hope I can help you with a few more details.

Thanks!
Kevin