8 years later, fuckin billion stars later, millions of reasons and nothing. Lets just agree that this will never be added for some reason and get over it, it sucks but if you really want to study your missplays, put obs in background and setup f11 on start and stop recording, then stop and start after every play if you dont want to look through hours of recordings, also easier to just delete the ones you dont feel like rewatching etc.