Ardusimple SimpleRTK3B Pro + External Compass having toiletbowling issue

Hello Team,

I’m using Ardusimple SimpleRTK3B Pro with an external compass (RM3100 Breakout Board | PNI Sensor). I’ve done all the required calibration before first flight but observing the infamous toiletbowling issue with simpleRTK3B Pro. When I switch to Here3 for GPS input, the toiletbowling disappears. But if I use simpleRTK3B Pro + Here3 as compass, it comes back. Is there any way to debug this? Attaching my log file and a video evidence

Clearly the RM3100 has not been correctly calibrated.