Final Cut not responding after switching to another application

I'm using Final cut 11.1.1, which at this time is up to date and same with the OS.

Final cut was working fine a few weeks ago. I've been editing on a M2 mini with no issues up to this point. I've editing projects bigger than this with no issues (1.5hr timelines with thousands of cuts). The only thing that is new that I downloaded recently is a macos update that gave me new video codex, but I don't know how to reverse that, or if that's even relevant.

Final cut works great when I first open it.

But as soon as I switch to another application, finder, a browser, just minimize to the desktop, when I reopen Final Cut, the application is not responding. If the library is a smaller library(just a few clips on a 1 min timeline), this may resolve in 5 seconds or so. But if a bigger timeline is open, such as a 15m timeline with many cuts, the program will never respond, and Final Cut must be re-opened. However, once reopened, will work great again until I need to access any other application, which sadly while editing, if very often.

I've tried cloning the library, deleting every thing one by one inside to see if it was anything in particular but it doesn't seem to be any one thing. I've tried deleting all of my plugins, titles, and effects. I've tried reinstalling Final cut. I've moved final cut and the library to a new drive. I've tried to first aid the drives I use. I've tried every single step apple support recommends. I've reset my preferences, I've cleaned the library cache. I've tried everything I can think of short of reinstalling the OS. I can't find anyone online that has had this issue.

On a phone call with apple support, I was told to make a post here.

Please.

Help.