25.2 Horrible Playback Lag

@jamieclarkeMy sequence settings:

Can you check your audio hardware settings and make sure Default Input is set to "No Input"

• Yes, this has been set to "No Input"

Do you have any third party panels, or plugins installed?

• Yes, "Asus Dial" and "Premiere Composer" by Mister Horse.

Can you try and hold down "SHIFT" while launching Premiere and check the boxes
"Clear media cache files"
"Reset plugin loading cache"

• Yes, tried resetting these two and all other options in the dialog box. None had any effect.

The video clips straight from the camera should play without problems without using proxies or preview renders. E.g. when playing a clip in MPV player, there is no stuttering at all, while playing the same clip in Premiere timeline, there is that initial stuttering for 2-4 s before it gets smooth. Also, the loss of mouse control seems to imply there is something abnormal going on. Playing the clip in MPV, the mouse cursor moves smoothly all the time, while in Premiere it jumps here and there.

Another thing to note: the playhead in Premiere timeline jumps back and forth for the first 2-4 seconds even when there is nothing on the timeline at that spot, provided that there is a yellow or red clip coming in a few seconds. Can this some kind of "pre-sensing" feature be turned off, because it seems to ruin the preview play completely?

So one thing that worked for me is I created proxy in H.264 quicktime rather then prores quicktime. I have the exact same machine like yours. 

Hope it helps.

Hi @aspenn - Can you post a screenshot of your sequence settings.  Since you are rendering your sequence there are video preview files being used,  It's best to have these set to ProRes Proxy.  Can you answer the questions in the pinned post.  HEVC 10bit 422 files are not hardware accelerated unless you are using an Intel 11-14th gen with an iGPU and Quicksync enabled.

I'm also experiencing something similar. When placing 4k 50 fps (HEVC 10 bit 4:2:2 ) footage on the timeline, this happens:

• After pressing play, the video and sound stutters for 2-4 seconds and the playhead jumps back and forth. After this, the playing normalizes, but occasional stutters may happen afterwards.
• If there are red or yellow sections on the timeline, even any green (rendered) section has the stuttering issue.
• If there is any reverse speed clip on the timeline, the stuttering issue appears about 12 seconds before the reversed clip, even if the clips before the reversed one are green/rendered (as if Premiere is trying to read the reversed clip in the background and then messing up the current playback).
• During the stuttering, the mouse control is lost. The mouse just teleports all over the screen if you try to move it.

The only workaround so far is to render the whole timeline after every single change you make, which obviously makes the editing a very slow process. Audio input is set to none, but this has no impact.

The footage here should be no problem to just play back without effects for a high-spec laptop that I'm using. And the green rendered sections should play without problems no matter what is going on beyond them.

My system:

• Asus ProArt P16 laptop
• 64GB RAM
• AMD Ryzen AI 9 HX 370
• RTX 4070 (laptop)
• Windows 11 Pro 10.0.26100 Build 26100
• Premiere Pro 25.2.1 (Build 2)

Hi @Mattie P. - Do you have this issue in a clean 25.2 project?  You can turn off media intelligence it's in your settings under "Media Analysis & Transcription.  

Does clearing your media cache in 25.2 help your issue?

Hi @jamieclarke seems others are having similar issues. For me, reset preferences and turning off plug ins doesn't work. It seems this is happening only when opening a project from a previous version of PP for the first time. Which I do quite often, and this has been a real slow down. Is there some new heavy analysis going on that would consume system resources like this when first opening a project from 25.1?

Hi @akatarun11 @Karthick_Suresh5848 @michaelb58880971 @hironrai @jubaud - We need a few more details to try to help with the issue.
Please see, How do I write a bug report?

Please see pinned post for other information and troubleshooting steps

Sorry for the frustration.

Yes same issue. Horrible lag on playback. I was borderline on switching to different editing software and this kind of issue is just making it easier gor me to make a switch. 

No one needs your A.I generative tools. We are editors and we can do that ourselves. Just give us proper render speed and smooth workflow. That is all we need.

Same issue here.  Samsung T7 SSD's MPC M1's with 32G Ram.  Or imac M3's with similar ram.  SSD's also.  GRRRR! 

I have GeForce 2080 SUPER and still the normal playback is too laggy. Cant even play it in 1/4 resolution.