Thought I should report this. The game is "butter smooth" with framegen disabled but as soon as I enable it - asked multiple friends, all confirmed it - it causes microstuttering and even causes the game to crash. Happened to all of us. Newest gpu drivers. Not sure if my specs are needed, but just in case:
RTX 5070Ti, Ryzen 9 9950X3D, 2x32gb DDR5 Ram - game is installed on an nvme m2 drive, win11.
I assume this will get fixed along with the Ray Tracing, though.