Ruined Wall Problems with small roots

[shadowtech]

I am currently Printing the Ruined Walls and face some problems when printing the small roots.
Here are my settings at first.
Hier mal ein paar Infos:

Printer: Ender 5 with MicroSwiss all Metall Hotend
Fillament: 3dJake White PLA
Line Height: 0.2
Line Width: 0.4
Temp: 210°C
Bed: 50°C
PrintSpeed walls 40 mm/s
PrintSpeed Infill 80 mm/s
Retraction: 3.5 mm, 35 mm/s

For some reason at the same part of the model the strange behavior occurred. At other places of the model the roots print fine but not all. Did you have a suggestions what could lead to the problem? The other parts of the thing prints fine. It seems like under extrusion but I am not sure specially since it occur every time on the same place and at other places it prints without a problem. When It is under extrusion do you have a tipp how I can get rid of the problem?
I am still new to 3d Printing so I hope someone can help me.

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[Matt]

It looks like it might be melting or underextruding or over-retracting. I would investigate those things first.

[Nicholas Jebson]

Yeah, to me that looks like an under-extrusion caused by a blockage in the nozzle, you might want to change yours out or give it a good clean.

[Author]

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