I'm having almost the same issues. I've read that there can be memory issues when using ArcPRO and chrome at the same time. What GPU do you have and how much dedicated RAM to graphics? I might try a clean install as well to see if it fixes the problem for me.
When mine goes down, each of my screens may flicker black and then some or all may come back on. Cursor may be visible or not. Can't seem to access task manager and have to hold down computer reset button just to get it to respond.