I’m using APM 3.2.1 and have my magnetic declination set to ~13 degrees. The craft was flying fine.
I traveled to another country and attempted to do an AUTO flight there. The magnetic declination in the foreign country is ~5 degrees.
Although the craft made it home, it was flying sideways most of the time and spun like a top while going up and down.
Would a declination error of 8 degrees cause such erratic behavior?