08-02-2021, 07:49 AM
3800 PPI is complete overkill. I don't think your printer does better than 600PPI (and possibly only 300PPI). To print a 6" wide image at 600PPI you need and image which is 3600 pixels wide, so scale down your image before printing.
Also, see https://www.gimp-forum.net/Thread-Image-size-in-Gimp
Also, see https://www.gimp-forum.net/Thread-Image-size-in-Gimp