I have the 645 Music and bought it on 22/may 19 and have done a firmware update to 5.20.
I have set up Virtual Partner to pace me at 5.20/km and even when I am running at an average above this there is no change of how far in front I am (or behind for that matter)
I have run 6.5 km at average of 5.15/km and the VP will say I am 0.00 in front, YET the red runner icon has gone to the full right hand side.
What's up with this?