Hi - long time TR user here. I recently - this year, got an external crank power meter. Up until then i had been using ERG mode and power via my Tacx Vortex. And very happy i was too with this setup, no issues and the trainer tracked and changed power quite happily.
Now since i’ve gone to powermatch with my external power meter i find the trainer takes an age to catch up sometime shooting me over the target power by up to 50 Watts and takes ages to come down - i could accept it with short 15s intervals but with 3 minute V02 max sessions when the target power is 50W over for up to a minute it takes it’s toll! I’ve tried all the usual - small chainring, firmware updates, calibration etc and nothing seems to help. The frustrating thing is sometimes it works fine but that’s only around 40% of the time.
So i’m thinking of going back to using the trainer for power and accepting that the trainer is up around 20W (i tested it vs my power meter) and just living with it.
Anyone else done or found the same?
I suppose another option would be forking our a shedload of cash for an expensive wheel off trainer in the hope it’ll work better? (sounds good - not very realistic )