I have the community edition of the firmware for my CR-6 SE printer installed on a BigTreeTech SKR-CR6 V1.0 board. This firmware has a nice E-step calibration guide you can use to easily get the correct step/mm value.
However when I raise that value, my extruder motor starts to chop, it's like it doesn't have enough strength to push the filament through and starts chopping.
I tried raising the current on the extruder motor, from 600 mA which is standard, to 900 mA incrementally, but it didn't make any difference.
I just replaced the stock extruder with a dual gear extruder in hopes that the extruder was causing this. but the new extruder faces the same issue.
I think raising the Vref value for the extruder motor might help, but I don't know how to do that. on the BTT SKR-CR6 V1.0 board all stepper drivers are in UART mode so there is no way to change this on the board itself. and there is no way to change Vref in the UI as far as I know.
What should I do to progress with this issue?