Freezes during the game. (Assassin's Creed: Odyssey)

Hi. please help.

Download pirates of empressa, and under it save. played day was very delayed and took litsuhu.
Converted sohra under the face.
The game is running. the donut shop was gone.
Problem: randomly in place tightly hangs, sometimes crashes with no error on slave. table, but mostly crashes or the picture (sound is on) or a black screen (sound is on) - only reboot helps
Sometimes hangs - play - search of additional content and a black screen (sound is)
The wind changed, drivers updated, everything Bible set, the temperature super.
I think the problem is in maintaining.. but I have already passed half the game, and ran around the whole map..
PC:
5ghz I7 8700k
16ram 4200
970 m2 ssd evo
1080ti