According to Travis: I’ve finally found one thing to complain about on my Apple Watch. The VO2 max seems horribly inaccurate! The further and faster I run, the worse shape I’m in according to the VO2, haha! I might just turn it off since this appears widespread.
Incorrect VO2 Max data on Apple Watch
VO2 on Apple Watch Keeps Dropping
VO2 Max Doesn’t Work At All