I wish they would have explored what some of the commenters noted: does it happen when you position OBS such that it has to recursively capture itself? (The feed contains a picture of the feed which contains a picture of the feed which …)

It seemed like some positions, it would handle 2-4 recursions okay, but the positions where it had to do infinite recursions were the ones that the frame-rate plummeted.

It looks like whenever the scene, source, and audio panels on the bottom of the window are on screen but in the background the frame times become choppy.

I experienced a similar thing while testing it. Had it on another monitor with an app in full screen and it just locked onto a single frame.

Wish Jon didn't bash so much and contributed to the project instead :(