I´m using the Kickr and Zwift since 1 year know (have been riding over 8k miles).
Parallel i´m using the kickr with trainerroads doing a training program.
in the last weeks i noticed that the ftp i can hold on zwift is around 15% lower than my outside ftp (measured with a quark sram red powermeter - wich stayed constat).
when i raced a few month ago on zwift i had around 3.9 watts/kg now (same fitness same weight) i am happy to hold 3.5 over an hour.
any ideas or did zwift change the interpretation of the kickr data? or is it a “kickr problem” and if so does anyone now how to fix it?
thanks for your help