Choppy / laggy video playback in Photos
I am running Photos on an early 2015 Macbook Air on Monterey 12.5, all up to date. Library's total size is about 300gb.
Video playback in Photos is choppy/laggy (although the sound is continuous), particularly for higher res videos, even if short. It's kind of sporadic; every so once in a while, one will play fine, but most of the time they don't. For instance, an MP4 export from my GoPro 10, even only 9 seconds long, gets unwatchably chopping within the first second of playback. This happens even when all other apps are closed and I've freshly restarted. All originals are downloaded (aka not optimized).
If I export the original to the desktop and play it in QT, works just fine, never an issue. Playback works flawlessly on my iPhone 13 Pro as well.
Have seen similar posts from years past, but none recently so hoping someone can shed some light on this.