I've not used TrainerRoad. I've used Perfpro to control the Kickr with Zwift just reading the Kickr as a power meter (by removing the Kickr from "controllable trainer" in the Zwift settings screen, and using 2 ANT+ dongles) and get the same effect. I'll try with just Perfpro running to see if that does it (I don't think it did in the past, but there have been firmware updates since last year on both the Kickr and 920XT).
I enclose a GC screenshot that shows quite nicely the fact that it's only the power and speed that are dropping out (both from the Kickr), whilst cadence/heart rate and moxy data stay fine. It also shows quite nicely the amazing regularity of the dropouts - at around 100 seconds (+/- about 10).
I enclose a GC screenshot that shows quite nicely the fact that it's only the power and speed that are dropping out (both from the Kickr), whilst cadence/heart rate and moxy data stay fine. It also shows quite nicely the amazing regularity of the dropouts - at around 100 seconds (+/- about 10).