No, I capture it all together, edit it all together and render it all together. It's easier and faster that way, and all this stuff was recorded with a good-quality rented boom mic, so there was no reason to think that sound wasn't fine.

The only problem is some traffic noise from our supposedly soundproof greenscreen studio, which can easily be removed by a highpass at around 200 Hz.

Slowed-down audio while the video remains the same is something I've never experienced. I wish there was just some way I could undo it...