Are you overclocking your CPU at all @SAMBUEV?
Something that seems to have helped me is to make sure you’re updated to the latest Nvidia drivers. I had an update available and decided to chance it. Afterwards I attempted to recreate every possible scenario I’ve had issues with in the past and none of them triggered the freeze. I’m sure that now I feel confident something will happen to disprove me, but for now it seems to have done the trick. I’m still restarting Unreal every so often just to be sure and keeping a close on my resources usage via Task Manager and all seems to be going well.
When was the last time you cleaned your PC, as in physically removed the dust and dirt from it? Could you be overheating at all?