Last week bought a brand new TF 2 smart trainer. Bike shop installed brand new 11 speed 11-30 casette. When ridy my first movie ride BRUGGE (really FLAT) in the TACX training app i instant felt that my pedalling is very heavy. During the specific ride mostly at 0% ,pedaling is heavy but in eg in the innercity of Brugge a slight 1% climb makes pedaling sooo hard i think something is really wrong with my trainer. Did calibration by the TAcx Utilty app en got the lates firmware but nothing is working or helping; Cycling like this is not funny anymore. Contacted Garmin support more than a week ago by answering a mail i got from them where i have to describe the problem. uptil now no reaction yet 
I also tried Zwift and also there the same problem of heavy pedaling . Pleas Garmin+Tacx help me with this because i am really disappointed/ kind regards Sven
