This is interesting, but I should have noticed that myself and got them backwards. I run all my projects from the machine itself and get the ringing artifacts so I should have caught that. My bad.
I wonder if one of the problems is the cable you’re using. Have you tried any other USB cables? I know the one that comes with the XTool is a bit iffy.
As another user here has pointed out.
However, you can always use my wireless solution if you want. Which is how I always run things; just do up the project, export gcode, drag/drop onto the sender. When it says ‘ok’ hit enter to close, walk to machine, bap the button to start.