If it only works at 16x that would explain why I got more noise at 32x with interpolation "enabled" when I tried it. I didn't try 32x with interpolation off, but I definitely had more noise with it on. It was still quieter than the 0.85 with 16x micro stepping.

Happening to me as well. I get a stretch of a bunch of them in a row, and then nothing for a while. Had a print finish last night, and no timeout since then, but last night there were many.

I had the uncontrolled head movement after I pushed the reset button, not specifically a software reset. Don't know if that helps diagnose anything.