Playback choppy on my drone footage (h265 hevc 10 bit) since august 2025.4 update

Question

Hi ! Found the problem troubleshooting in every way until i finally reverted to previous adobe version 25.3. Problem solved. So I'm positive the problem came with the update.
Drone files frozen : h265 HEVC 10 bit 4:2:0 
 
What I first intended to write, in case it could help a developer or programmer : 
I've been working on a big editing project for some months and all was going well. Then I installed the new update (25.4)  august 2025. And since then, everything is the same EXCEPT the playback on my own DJI MAVIC PRO 2 Footage, that is choppy and laggy.
-I'm on Mac Sequoia 15.6-I cleared cache
-restarted and rebooted numerous times
-tried importing the footage from another hard drive : same problem
-playback isnt laggy when I just watch the video with vlc or preview window
-deleted render files
-Even rendered, still choppy, sometimes frozen.-The files in my project have different frame rates and encodings and all of the other sources works well, as it did before the update. The only problem I have is with my drone footage.

kglad · Accepted Answer

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from using the community bugs">

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