Hope this topic hasn’t already been covered. I’ve had a quick look at previous posts relating to the Flux 2 and haven’t found anything that is similar to the problem I am experiencing.
So I purchased my Flux 2 just before Xmas 2019 and have exclusively used it on Zwift. To my knowledge both my Flux 2 and Zwift (via Apple TV) are running on the latest firmware/app update.
The last 2 or 3 weeks, regardless of how hard/fast I pedal and using the hardest gears on my 2x11 speed road bike. The system does not seem to be able to offer resistance at anymore than 380 - 400 watts. It seems to work fine at efforts below these power levels so generally fine when cruising during group rides. However, the moment it comes time for sprints, the unit only seems to apply resistance up to 350-400 watts before I notice the Flux 2 stops applying resistance and holds the power at 350-400 watts for the remaining sprint (so frustrating). The same problem occurs in ERG training mode where below the power levels described above the unit seems to work but as soon as the power required reaches above these, the unit struggles.
This was not the case when I first purchased the unit where I was easily putting out between 800-1000 watts on really hard sprint efforts. Anyone experienced anything similar??