# Printer keeps pausing during prints

I'm having a rather strange issue in that the printer pauses randomly during prints. This was first noticed when printing a large and complicated model (from SD). Since then a 20 mm calibration cube has been printed (from USB) with no issues (paused briefly after printing the skirt), it was used in conjunction with M92 G-code command to calibrate the stepper motors. Now i'm trying to print a temperature tower but it pauses multiple times even on the first layer (tried USB and SD). How do i ensure that the printer does not pause during prints?

Here's a link to a video of the printer pausing (trying to print a temperature tower).

Slicer details:

• Ultimaker Cura 4.0
• Also tried slic3r 1.3 32 bit
• The temperature tower had a change temperature at Z injected into the G-code but none of the others did.

Printer details:

• Anycubic S
• Firmware 1.1.2
• filament PLA+
• firmware reprap/marlin
• Is the printer equiped with a optical filament sensor? I had similar pauses on a different printer and it was caused by filament sensor sencing false alarms. – bujon Jul 24 '19 at 12:38
• The printer does not have a optical filament sensor – Tasty213 Jul 24 '19 at 12:54
• Does your gcode have multiple M109 (wait for new temp) commands? – Davo Jul 24 '19 at 17:33
• It does but the temperature on the printers screen does not change to indicate that it's trying to change temperatures – Tasty213 Jul 25 '19 at 8:48
• Could it be the z-hop bug (at speed=c, yes c the speed of light)? It was a ridiculous cura bug. – R.. GitHub STOP HELPING ICE Jul 30 '19 at 12:40