Pedal resistance change from pairing to startup screen

Wahoo Kickr 2017 seems to change resistance for no reason when going from pairing screen to startup screen and back again for no reason. Annoying since I like to warmup in the pairing screen to watch heart rate/watts accelerate but resistance increases quite a bit making spinning hard to do. Intermittent problem but more frequent recently. Kickr firmware UTD and do spin down calibration once/week. Thanks