Tacx Flux S Fluctuating Resistance in SIM mode

Bugs and Support
1

Hi Everyone

I’m experiencing a frustrating issue that is really detracting from my Zwift experience. It seems to occur in Sim mode only. workouts in ERG Mode seem completely fine.

When riding uphill or downhill - I seem to be having random fluctuations in the trainer resistance. It is most noticeable on steep hills or fast downhills (when there is a sudden spike of resistance that slows my pedalling)

I’ve done a ride and downloaded the Zwift log file and fed it into zwiftalizer . com. The report showed no bluetooth or networking issues at all.

Setup:
Apple Macbook via Bluetooth.
Tacx Flux S

Please help!

2

I’d be interested to hear what Garmin support says about how to troubleshoot that. It sounds like a trainer issue if your connection to the trainer is solid. You could test it on some other device if you have something else that will run Zwift.