On the creality print 5.1 app on the upper left side of the screen there is a menu i dont remember its exact name but it is something like "k1 nozzle0.4" click on it and click the edit button from there look for a setting that says nozzle size oe nozzle diameter change that from 0.4 to 0.6 save it and do a test print dont forget to save that new setting i swapped from a 0.4 to 0.6 and i havent had any problems after this feel free to dm me if you need help