Did another run this morning. Controlled Kickr via ANT+ on PC (ANT+ dongle just a few inches from the KickR) while recording to Garmin 800 and Garmin 910XT. There was no bluetooth in the room. At exactly the 30 minute mark I moved the Garmin 800 about 12 inches from the trainer. The Garmin 910 stayed on the aero bars. I don't think it is simply a weak signal from the trainer. TrainerRoad PC file Garmin 800 Garmin 910XT
Entire last year I had worry free riding on my kicker (except power discrepancy), this year wahoo/garmin and others just totally blow. After many upgrades I had the same exactly issue as you.
I'm so F@## tired on spending hours of troubleshooting on equipment that cost so much money, it is ridiculous (I had 2 Wahoo kickers). First time I have realized advantage of good old Compu Trainers...They just work...
Here is what fixed my power drop issue:
Removed all unused ANT+ devices from Garmin 1000
Restarted Kickr (unplug/plug back in)
Re calibrated and spinned down about billion times.
Changed wi-fi access point channel to 1 on 2.4Ghz frequency
Power is steady now no major dropouts (except when my wife turns on microwave) , after last cassette cleanup few days back, my kicker is off by 40W....so I had to use my power tap P1 pedals to control wattage and it is fine now, but WTF...
After having 3 cases open with Wahoo, they loaded firmware that removes string gauge from power control, yes power was closer to my pedals, but after removing string gauge kicker was simply calculating power based on speed, no different from 300$ kinetic Kurt and power from speed calculator.
Wahoo Kickers are very poorly made devices, they have quality control issues, I have put about 8000km on each and after that time they feel way less stable that eg. CompuTrainer in the studio that is abused by hundreds of people.
Next time I will have a chance to place my hands on used CompuTrainer I will get one for sure.
I was huge on Kickr for long time, open platform, all the cool apps, Blootooth etc. but after having 2 kickers and same problems each time, I will not be buying third one for sure.
First of all it is absolutely unacceptable they can't fix power discrepancy issues, I understand first batch could have problems, but so many years later power is still all over the map, and don't tell me as long as it is consistent it doesn't matter.... I have 4 power meters all within 2% from each other, Wahoo is always off by 10-15% not something I would expect from device that cost over 1600$ CAD. total garbage.
Friend of my just bough Wahoo Snap, what a miss, metal roller was wobbly, so he replaced with the new one, same issue....