Unknown Printing layershift/artifact

Hello. I am trying to print a bottle holder that just fits on the buildplate of my P1S. Each time that I try to print the file some layershift occurs at exactly the same height. It happens when the printer starts making the first top layer. See included images.

The line is not visisble in the slicer nor the model. It must be an artifact. Does someone know what is causing this, and how this could be avoided?




Check the printing speed in your sclicer preview.
Sometime it happend when your printer ist changing the printing speed.

Thank you for your message. This led me to the problem. It is not necessary the printing speed. This is consistent throughout the print. However, the rapid change in layer time seems to cause it.


One layer takes only 47 seconds, however the one after takes 1179 seconds. This seems to be the cause for the problem.

Any ideas on how to solve this without lowering the printing speed?