CR-10 randomly pauses for a few seconds I thought I have already had and fixed every problem one could possibly have with a 3D printer. Guess I was wrong.

I haven't used my Creality CR-10 for a few weeks, everything was working the last time I tried. Today I wanted to print something minor and the printer just randomly paused a few times in the middle of the print.

To be exact, it seems that after a few G-code commands have been executed the printer just freezes for like 10 seconds and then continues like nothing happened. This occurred a few times and every time the nozzle is melting the surrounding plastic and extruding a little which ruins the print.

I have tried:


Print from SD Card
Print from Laptop via USB connection to Ultimaker Cura
Print different models at different settings


My theory is that either there is a core problem with how Ultimaker Cura exports the G-code files or something is wrong with the printer software. I thought that maybe re-installing the firmware might fix it but I heard that that is a risky process. What do I do?
Edit: The z-hop problem has been fixed in Cura 4.2.



This is a known issue with Cura 4.1 when z-hop is enabled.

If you touch the z-axis motor frame while it is apparently stationary, you may feel it is actually moving.

The solution is to set a value (I used something like 250 in conjunction with an Ender 3) for the "Maximum Z Speed".

First you need to get the setting to be visible, so go to the "Settings" menu and choose "Configure setting visibility...":



Then in the "Print settings" panel:



The full story is available on GitHub at [4.1 - current master branch] Z feed rates #5753.