Well from what it looks like the game animations are capped at 60 FPS and it's extremely noticeable if you play on a 144hz or higher monitor so I would imagine it's probably going to be a widespread issue. The game ran fine during the beta other than the mouse input issue but now it's just so much worse...I really hope that whatever issues people are having right now are temporary and aren't affecting too many people. This is more than MCC's big chance at a redemption arc, this launch means a lot for the PC community and a solid experience out of the gate is paramount to ensure that Halo finally gets a shot at a real comeback.