Hi,
Not sure this may have been brought up before. I just bought a new turbo trainer (Tacx flux S) and am currently having issues with power, or power lag in zwift, especially when racing.
Starting at the beginning, when calibrating using my old elite Direto X through zwift, it would ask to accelerate to 32kph then stop, however with the new tacx it asks to accelarate to 37kph then stop.
Initially i thought there may be an error with the turbo trainer underproducing power as it struggled to go over 500 watts, especially compared to the direto which was hitting 800w.
I have emailed garmin and await a response.
In the meantime I just carried out a test with the Tacx paired to zwift and my Favero assiomas paired to my garmin epix watch.
From testing I rode steady and both were within 10 watts of each other, sometimes the faveros were few watts higher, others the tacx was.
The issue seemed to be with Sprints and higher power, I conducted 3 sprints (500, 600, 700 watts), on every occasion my faveros instantly responded, however whilst my faveros and epix was showing 740 watts, zwift was showing 420w. Every sprint my zwift power was down by at least 100 hundred watts on screen.
As i have delved deeper into the actual power files for both efforts, both the turbo and favero’s seem to be reasonably close, the issue seems to be the power shown on screen. According to the .fit files, In reality my turbo is hitting similar numbers to the faveros but it isnt reflecting whats happening on screen.
This is causing, especially in races, getting dropped like a stone when the efforts increase because whilst everyone else is putting power down, mine is struggling. In theory im hitting higher power numbers but after 5 seconds am gassed so im guessing zwift isnt showing the actual power because of the lag and the delay in showing true numbers if that makes sense.
Has anybody else had this issue, if so what was the remedy/outcome.
thanks