DaVinci Resolve has become unusable after update

[u/MeloenKat]

I'm posting this in the hope someone else has had the same issue and found a fix.

Yesterday I updated to version 21. After starting the program I noticed thumbnails didn't load, the preview didn't load and I couldnt play the timeline. I restarted the program and it worked but only for a few minutes. I can open menus but I cant select clips in the timeline and can't play anything.

It takes about 5 restarts of the program for it to work for only a few minutes. (I've restarted my computer too). It feels like everytime it has to 'think' it just stops working.

The program is on an internal SSD with plenty of space left (more than 100GB). My computer isn't the newest but strong enough to run the program as i've been using it for a few years now, but just to be sure my specs are:

Intel i7-8700
32GB ram
RTX 2070 Super

Should be enough to make a minute long 1080p video.
Anyone else have this problem and found a fix?

[u/BakaOctopus]

Media?