It seems to me that the error was fixed by replacing DX12 with DX11 in the project settings. (Saw the solution here GPU crashed or D3D device removed error - #6 by SupportiveEntity and decided to give it a try). I even managed to create a collision for mesh in the editor, and the Unreal Engine worked properly. I really hope this is a solution to the problem.
And I will answer your questions.
My GPU is not overclocked.
No.
Yes, I am using Nvidia Game Ready Drivers. If the editor crashes continue, I’ll try to replace the drivers.
Thanks for your help! And thanks to this forum that it exists, it helps a lot. )