I use TR with powermatch. I have a Wahoo KICKR and a Powertap P1 pedals.
Also, at the same time I connect my Garmin unit to my P1 pedals. I know…don’t ask…I know you can send the Workout to GC directly from TR using Ride Sync. I like recording the workout using my Garmin unit. Primarily I do this because the Garmin will calculate VO2 only if you use the Garmin unit to record the workout
for the last few weeks I notice my Garmin always read 10 or so less watts than what TR was reading. Couldn’t figure out why until I decided last night to remove the battery from my right P1 pedal. The result, the power recorded in TR matched the power recorded in my Garmin.
Putting the whole connecting the Garmin Unit to the power meter at the same time connected to TR aside, this makes me wonder if Trainerroad is managing the power readings from the Power Meter with is dual correctly. is the trainingroad app having a difficult keeping up adjusting the resistance on the Wahoo KICR. Specially when people don’t have good L & R power balance.