That's bizarre. I use GeForce Experience to monitor frame rates and capture both video and stills, and I can still count the CTD's I've had since installation last fall on one hand.I had similar hanging during start up problems recently and saw on another forum that someone had cured it by deleting Nvidia Experience. I did that and it worked for me, no probs since. His explanation for this was " Nvidia Experience and MS2020 do not play well together" not scientific but it neatly summed up the problem for me.
Bob.