I had this issue for nearly two years... No problem with marlin firmware.

Tried everything. Changed Steppers, different extruders, hotends, bowden tubes.... I had to use a PA value of 0.4 with a 5cm bowden.

New Year, new (last) try. Had already a bambu lab printer in the basket. Instead, I ordered an Malow NF Sunrise extruder. Thought, this has to work. It's a all in one solution.

First print yesterday without calibration a PA value of 0.04 with perfect corners.

Hello,

is there a documentation for the M122 output? I'm not able to find anything useful.

In particular the drive output. I got here some ifcount and timeout values for my extruder.

The meaning might be:

1. standstill - might be the current stepper status
2. read errors - for the stepper driver?
3. write errors - for the stepper driver?
4. ifcount - ?
5. reads - ?
6. timeouts ?

regards,
Martin.