I launch for the first time AC Valhalla today, huge surprise the game is in 4:3. Whatever, in the options i set it to 1920:1080 16/9. And it didn't change anything. The game is still on 4:3. I tried reinstall it , did not fix. I play on i7 Nvidia gtx 1660ti ( 6go) ssd 400Go 16Go Ram.