Tacx vortex and hills at 6% and more

I was riding Tour du Zwitf this morning (Richemond) and I had a nice and fast first 10km, but suddenly my speed dropped almost to 0 km/h when climbing a 6% hill and everyone was passing me! I ‘m in a great shape, it’s not because I can’t climb hill!
I’m riding with a Tacx Vortex Smart 2019 with a iPad. I did the calibration with the tacx app.
What is the problem here?

How many watts did it say you were putting out on the climb?

I suspect that it’s a tyre pressure/roller tension issue.

1 Like

Sorry but I don’t remember. My pressure tires looks alright

Should I increase the pressure/roller tension ?