The same thing happened with me. I have an rx5700xt btw. I updated to the newest driver and then after sometime, while browsing or playing games, my screen goes black. After it comes back which is about 2-4 seconds, everything crashes and the only way to close the app is to go into the task manager and do it. And then it happens again and again.
I have the same problem. Yesterday it somehow worked after going to device maneger and selecting a older driver but today i turn on my pc and the glitch is there again. D: