Whilst trying the new update tonight it is definitely motors have gotten louder in declination. They are quiet in RA but most definitely louder in Dec after the update
Update I... I've read this in another thread
"Thank you, however, we have roughly identified the reason — we increased the motor current in equatorial mount mode to make the operation smoother and more stable, but this inadvertently led to increased noise. That said, the imaging performance remains normal during shooting. " this is from zwo techs
