So I updated my cam to the latest firmware (Firmware v. 01.01.05.10)  and took the camera kayak fishing and when it started to go lower light I enabled the Super Night Mode.
I don't use the high bit rate option as standard makes it SOOOO much easier and faster to scrub thru looking for the action shots.  (I know I can add highlight tags but I forget all the time LOL)  resolution is 4k 30fps.
oh and the audio sync issue I noticed last time I took it fishing is fixed.
NOTE:  make sure you watch it in 4k!  You might have to go into the options while watching in youtube and increase the resolution to 4k.

It's amazing what the action 5 can do compared to the 4. Nice vid by the way...Thanks!

Looks good!