Record at a single frame offset?

[pureburntt]

I typically record at 120fps and frame blend to 60. I wanted to record at 180 but between bitrate and my pc not being able to record that, I was wondering if it was possible to run the game (beat saber) at 180fps, and record each replay at a 1 or 2 frame offset to stitch together a high quality 180fps video that can then be blended down to 60.