I've been using RR for a while with my GoPro Hero 9. Recently I've noticed a synchronization issue.
I may have had it all along and just not noticed it.

I am using RR to read the data from the GP generated MP4 files. I'm not doing any manual sync.

The speedometer display seems to be several seconds behind the video and audio. While I can't know the speed
of my motorcycle, I know the trails I'm riding. Plus the engine revs up and the images fly past faster,
and then the speedometer gauge is updated.

I think the altimeter display is also several seconds behind the video and audio, but I'm not as sure.