I HAVE SOLVED BLACKSCREEN BUG!

Do you have random Blackscreens ingames? You can hear ingame sound while blackscreen? It may have something to do with DisplayPort.

TRY THIS:

1. Go to your graphiccards-system-menu.
2. Search for "Adjust Desktop Size and Position" or "Desktop scaling" or something like this.
3. Choose "Full-screen" or "no scaling" (if you chose no scaling your ingame resolution have to be the same as your native screen resolution).
4. If it doesnt work enable "Override the scaling mode set by games and programs".