May I make an observation here please.
I have had major problems for many years with programs slowing down and coming up with the dreaded ‘program not responding’ problem. I have Windows 10.
A few weeks ago after having to press CTRL/ALT delete I found that Google Chrome was eating up an incredible amount of resources, which didn’t make much sense to me because I had only had Chrome upon for about 10 minutes with Dorico running.
I decided to change the browser to the latest version of Microsoft Edge, and since I did the problem of ‘program not responding’ has disappeared.
As Daniel suggests you may have some sort of leaking problem. I am certainly not in any way qualified to say that this is so.
Best wishes and I hope you resolve your problem quickly.
Keep healthy and keep creating.