Randomly applied resistance Tacx Igenious

 I find my Tacx iGenious resistance to be inconsistent. If I’m riding at a constant speed the resistance gets harder and harder until i can barely peddle any more. That was in the short workout 30 minutes. Forget hitting the 400w mark like they want to. Even 250w is difficult. I tried also riding without choosing a workout and the tension seems normal. I can hit the 400w mark, can’t hold it too long though. Held on with a pack at 330w for awhile… Any suggestions…??? I have the latest firmware and i removed and reconnected.

Thank you.