Rogue Leader :
I feel like it may be a hardware issue, do you remember the last driver version that did work correctly? Between then and now have you changed any hardware in your PC?
Probably the last catalyst driver were the most stable, After that the first Crimson drivers were okay, after the drivers that messed up the HUD for fallout 4 things have been fairly unstable. It might be a bad CPU overclock, but I had the overclock since the beginning and it never gave problems aside when I when I was setting it up. Apparently I only have one crash and that's from 2015 if I'm going by windows crash logs.
These hangups seem to occur mostly when running a game.