My setup is Tacx Blue Matic, Garmin Speed Sensor gen. 2 and Macbook Air. From 3 days during the ride Zwift shows definitely too high watts. Normally I have approx. 220W. Right now I see 500-600W and it can be even higher without too much effort. I feel the same resistance in Blue Matic as usual. I didn’t change anything in settings, my setup etc. I was wondering if it’s maybe a battery in Garmin sensor so I’ve changed it but it didn’t help. Any suggestions?