Problem with choppy playback since update

After updating to Davinci Resolve 17 I started having issues with playback on projects that previously worked flawlessly. I tried going back to the previous version but the problems persist. The projects that I never opened in the newer version still work fine though. While trying out various ways to fix the issue I notices that I can't generate optimized media. I get the error message:

"Error encountered during optimized media generate. Canceling...".

I suspect there's something wrong with the accessing data from generated files but I really don't know what to do about it. I've tried deleting it, changing the media storage path and generating the files again but the issue persists.

Give this a good read. It goes over some of the info we'll need to help.

viewtopic.php?f=21&t=90190

Thanks for the link. I've read everything that seemed relevant to my issue and added information to my signature. I'm not particularly computer savvy so I hope I didn't miss anything important.

I also got the logs in case it's useful: https://drive.google.com/file/d/1jvJ0Vt ... sp=sharing

I've tried creating a new project and copy over my work and I can generate optimized media. It works fine if I set the project to 30 fps, but it's just as awful at 60, even with optimized media and/or Quarter Resolution (proxy mode).

Iw as swrong about the projects I never opened in the newer version being fine. They all have the same problem if I have the Timeline Frame Rate set to 60. It sounds like a performance issue (which is weird since it ran fine before) but after trying a bunch of ways to optimize I still hav ethe same issue and if I do the playback in Edit mode the playback claims to be running at 60 fps when it's clearly not.

Example: https://i.gyazo.com/839f7241f7ca9e39efb ... 597565.mp4

It's not a problem with the files either. I've recorded new clips and I still have the same issues. They looks fine in other programs and when I tell Resolve to render them in a video, but they are really choppy in playback.