Premiere Timeline Lag - 4K Monitors

[joen40029404]

Hello everyone,

I've recently purchased 2 4K monitors to use and since installing them I am experiencing timeline lag when editing.  I want to specify that this is timeline and edit lag only, not playback lag.  My videos playback fine, only when I edit do I get a delay.  I receive about a half second delay when cutting on the timeline, or deleting a clip.

If I resize the premiere window down a good bit, or change my desktop settings to a smaller resolution this goes away.  Neither are good solutions to me as I would like to keep the native 4K workspace.  This happen no matter what media I have on the timeline.  I have experienced it with MP3 files, ProRes movie files, MP4 video files and even JPG files.

My system is as follows:

Mac OS High Sierra 10.13.6

Macbook Pro 15 inch 2017

3.1 i7 procesor

16 gb ram

Radio Pro 560 4096 MB ram

Displays are 2 samsung U28E590 set at 3840 x 2160 at 60 hertz refresh rate

Premiere Pro is version 12.1.1 build 10

Has anyone experienced this issue?  Does anyone have a fix?

Also, just FYI I do not experience the same issue when running Final Cut Pro X.

Thanks for any help you can provide.

[alexanderl28145831]

this problem adobe, not fixit

[thiagol94026458]

Hello @joen40029404 , you posted this 2 years ago but got no answer, did you find a way to fix it? I'm having the same problem 😞