I recently upgraded my smart trainer from a Tacx wheel on to a Tacx Flux.
I generally do workouts with ERG mode and I noticed that with the Flux the power seems to vary wildly compared to the old wheel on trainer. With the 3 sec average mode on it makes no odds (in fact I always have that one), and the power reading changes every second on the screen.
I now have a Stages power meter so I decided to use that for the power reading so i was consistent inside and outside. I have the same issue as above, there appears to be no 3 sec average, but worse the power readings on the mobile app are always different to the power readings on the screen. This causes an issue when doing a workout and say i’m looking at the app rather than the screen it says i need to up power but the screen is at the power etc etc