Just started zwifting on a tacx vortex.
Enjoying it so far apart from a strange issue which is troubling me.
On hills the power measured by the vortex drops rapidly even if I stay in the same gear and ride at the same cadence.
I can be riding easy on the flat ~175w and as i hit a hill the power can drop down to 50w even if it feels like i’m working much harder in the same gear and cadence.
The steeper the hill the lower the power seems to drop. I would expect my road speed to decrease on the hills but not my power?
Increasing my cadence in the same gear makes no difference to displayed power when i’m on a hill but makes a bigger difference to displayed power on the flat?