If I tell u my settings u’ll be buffled. Velleman is using some strange settings, it’s too complicated to compare to settings from prusa (for example).
For my printer, repetier report XY 13 hours 43 min. Real time 19 hours. 55% infill.
Tested with usb connection and direct print from sd-card. The “error” is with any file, for me. Designed by you or by me, or anyone.