Preview stops working for everything after spending time in a certain comp

[Norawee30273612zpl9]

URGENT PROBLEM MAKING IT IMPOSSIBLE TO USE AE!

After effects preview stops rendering new frames from ALL sources after toggling visibility of some layers in a comp. Nothing new that I haven't used before is in this comp. 

Watch attached video as it shows the problem visually.

Specs: 

RTX 3070TI

Ryzen 5900X

32GB Ram

500GB free space left on hard drive

Software:
Windows 10, AE 23.4

Also closing after effects after the onset of the problem isn't possible except using task manager to force quit. 

 https://youtu.be/0DnJatrl5Rs

I have tried to ignore the files which "caused" the glitch but it turns out that the preview breaking happens even when none of the visibility changes. Switching to 2 view (the comp is 3D) allows me to see the wireframes moving but no preview renders.

[Norawee30273612zpl9]

I found the root of the problem! (I think). I removed a layer which I had used a rotobrush on and it seems to have fixed the problem tentatively. I'm going to stop using the rotobrush tool for now and look for another solution (probably keyframe with masks, although I am not looking forwards to that). 

However I still want to know if there is a solution or specific problem causing the glitch as the rotobrush tool is quite a useful one.