Windows keeps freezing after I installed the new update 20h2

Hi, recently I installed the new Windows 10 update 20h2 build 19042.867 and since then my computer keeps freezing. When I turn on the PC everything is alright, then about after 30 minutes the PC goes crazy. It like freeze for half a second then unfreeze for half a second, than again and again and it goes like this for like 30-50 minutes and then it is normal for the next 30 minutes and then the whole cycle continues. If I restart the PC right when it's freezing it goes normal for approximately 30 minutes and then it goes freezing again and again. I was not able to find any solutions or anything, I tried to run some tests for corrupted files in cmd, but that don't helped me at all. Please help.

I think I've made a mistake here. I didn't make image of 2004