Ive been using zwift for the several months with no issues. But recently when I did a Gorbi Interval workout at 260watts my heart rate only rose up to 120hpm, which is way too low. I have an FTP of 225 watts. I was able to finish the workout, Zwift gave me 90TSS and then I check trainingpeaks with the HTSS and it was only 40TSS, which is in check with what I was feeling.
I have done advanced spindowns several times, checked other workouts and Im still getting a low resistance. Its really frustrating since Im trying to get a good difficult workout but the resistance is too low.
Is anybody having the same issues?