@dc42 Thanks! Commenting M203 really did solve the issue. I thought I did something wrong with my sensorless homing setup.

Hardware: Stock Prusa MK3s, Duet 3 Mini 5+ (WiFi)

I am trying to replace the Einsy board on my Prusa with a Mini 5+ using config from https://github.com/CNCKitchen/PrusaDUET. However, I did make some modifications for sensorless homing support using https://duet3d.dozuki.com/Wiki/Stall_detection_and_sensorless_homing.

For the most part homing seems to work when manually triggered from DWC. However, at the start of a print once the bed and nozzle is hot enough, it seems to try to home which fails. Link to the video is: https://www.dropbox.com/s/oejvtjnt360ji5k/printfail.webm?dl=0 (skip to 30s for the failure).

DWC reports the requested speed to be 3mm/s, which I think is not enough for stallguard to work properly. I'm not really sure where to make adjustments, as like I've said, manually homing seems to work ok.

I am trying to print one of the sample gcode files that came with the printer (MK3S_PLA_Batman_200um_18M.gcode). This was of course sliced for the previous board and firmware (Einsy + Marlin). Do these need modification as well?