Issues with wattage in Free ride/race's

 Hello! 

Im getting a issue with the Watts and speed in race and free rides. The thing is, in Workouts its all fine i get the right amount of watts for the effort im putting in, but when im doing a Free ride/race i get like 60-100w when i normaly would be pushing 600-800w, with the same gear and cadence. This also happens in the FTP sessions, the warmup and such is all fine, but when i hit the 20min’s im going to do the FTP, i get the same problems as in Free ride/race’s. 

My trainer: Elite Realtour B+, im pairing over Ant+ and runing Zwift on my PC.