The following tweaks are intended to improve the quality of prints on the Qidi Plus 4
To edit your printer.cfg file, this can typically be done through the FluiddUI Web Page to the printer under the Configuration tab.
Find the file named printer.cfg and click on it
When done editing, press the SAVE & RESTART button in the FluiddUI
This is needed as the Klipper version that ships with the Plus 4 tunes its input shapers around the assumption that square corner velocity is always set to 5.
For each of the mentioned configuration sections within your printer.cfg file, find the named fields and change the associated value to the newly specified value.
[printer]
square_corner_velocity: 5