I know people like shitting on Ubisoft. (I do too) but I will give them a lot of credit for the opitimization for the black flag remake.

My system is a Ryzen 5 5600x and a 3060 ti and 16gb’s of ram. I’m running on 4k DLSS performance (ik its not native) and it ran pretty smooth most of the time. My only con is that cutscenes are locked to 30 but I already downloaded a mod that unlocks the framerate.