Premiere Pro version: 22.6.2
OS: Win 11
CPU: i9900K
GPU: Nvidia 3070
RAM: 64GB
HD: NVMe
Origional clips are 1920x1080 .mp4 container and the proxies are 1280x720 prores. This looks like a bug, because I can play both the origional clip and the proxy fine with no lag, but I can't play the clip when it has an "attached proxy".
Here is a 3minute video of me reproducing the issue. https://www.youtube.com/watch?v=yvxKJuPz9z0