I cannot play back UHD footage in a HD timeline smoothly at all since version 23.3. General performance is very poor, playback is very jumpy and rendering time is very slow. Versions 23.1 - 23.2 run perfectly with smooth playback, any newer version is no use at all.
Apologies, a few typos in there. To clarify, 23.2 and earlier are the only versions that work properly.
Sorry for your issue, and thanks for creating the detailed post.
Do you mind sharing the following details so we can try to reproduce the issue on our end?
1. What's the frame size of the media you're using and the resolution of the Sequence?
2. Does it happen only with ProRes 4444 or all the codecs are affected?
Looking forward to your response.
Thank you for your reply.
1. Media frame size 3840x2160. Sequence 1920x1080.
2. It happens with any media.
Just tried fully emptying media cache and that didn't help.
Interestingly I have just tried the 24.1 Premiere Beta with the same project and it works well and plays smoothly.
Thanks for trying out the Beta. Are you working on Muticam projects? Please also let us know if you're using any third-party plugins.
Not using Multicam and also not using any third-party plugins. The footage has no effects on it at all.