I can't find any useful information on this that's recent I don't think so I thought I'd ask again.
My intel i3 12100F, while not being a bad CPU by any means is struggling dealing with OBS Studio recording at 4K resolution and downscaling to 1080p while also having to deal with the Synchron Yamaha CFX running at the same time (I'm recording Synthesia tutorials).
The audio isn't breaking up but the video framerate is a bit more unstable than I'd like. I think the GPU Audio rendering would solve most of that problem.