"Interesting fact: this problem only occurs with USB connection, not with radiomodem. I'll give it a shot, and test flight my Y6 tomorrow..."

"Hey, p.r. any update on the problem? Did you solved it?I have the same problem. Fast update rate with onboard mag, and much slower update rate with external mag. I've installed GY-271 compass module which has level translator built in. I should…"

"I just got successful calibration in the APM Planner 2.0.0 RC3, so I can confirm that it's definately a problem in the 1.3.4"

"Yes, it's fixed now. Thank you, you are the best.

BTW - Polish MP translation is very poor (and full of mistakes), I can give you a hand with that."

"Yes, my bad.I performed the calibration in the mission planner again. Again 0 0 0 offsets and strange 'rubbery' compass behaviour after the calibration. tlog attached.

PS: And again - everything back to normal after the calibration in the APM…"

"At the moment I'm not quite sure which log is which, but it's pretty possible that tlogs 25 and 26 are after the calibration in the MP 1.2.9 and tlogs 41 and 42 are after the calibration in the APM Planner 2. I've tried to record new logs, but…"