Extrusion Suddenly changes from smooth to Blobs at random Layer heights CURA5.2.1

[SleepyMonke 0]

Been facing intermittent this issue For a while in Some files Cura simply decides to change from extruding smooth continuous lines to a bunch of blobs winch ruin the print quality the worse part is that it happens at random layer heights with random Files but mostly on round objects already tried doing a full printer maintenance routine (leveling, adjusting belts an rollers, tightening bolts...) sometimes i get a perfect gcode sometimes a disaster of a print and sometimes something in between that's useful. to me it Doesn't seem to be printer related since with other models it prints absolutely amazing. just happens randomly

Slicer Cura V 5.2.1
Printer Biqu B1

[ahoeben 1,985]

Does it happen with the same gcode file at different layer heights each time you try? Then it really does sound like a printer issue.

[SleepyMonke 0]

No it happens allways at the same layer height with the same gcode but when i re-slice it happen at different heights