So I have been running quite a bit on my treadmill, with and without zwift. My forerunner 245 music has been calibrated to near perfection with my treadmill. BUT here is the problem; when I do a run on zwift I constantly get a pace 1 min per km slower than the reading on my treadmill AND my forerunner. I have done the calibration on zwift plenty of times as well but the reading still remains the same.
Anyone else with this problem? Please help.