Tacx Bushido “slipping”

I have a tacx bushido smart when pedalling flat sections it’s fine, but throw and incline at it (6% seems to be the start of problems) and the magnet seems to slip for 1/4 revolution it’s like pedalling squares.
Has anyone had this issue ? Does anyone have a solution?

So this is usually a tyre that isn’t inflated to the recommended pressure (100 or 110) or the knob hasn’t been tightened by the correct number of turns (it might say on the trainer or in the manual).

If it’s not that then I don’t know.

Ben thanks for the feedback, I don’t think (99 percent) the tyre is slipping it seems to be the magnetic resistance slipping

Did you find a solution for this? Over 7% my Bushido pedals squares / slips (not tire slip). Thanks.