[Fault on thin vertical geometry]

 

Hi everyone,

I printed a geometry which contains thin vertical "columns".

On these columns are small "hooks":

 

Since I am a beginner, I print with high quality settings.

Everything on the print is fine, except for these hooks.

As soon as the printer starts to print the hooks, there seems to be an offset and the quality is not OK anymore.

Everything above the columns is fine again.

Does anybody have an idea, what might be the cause here?

Do you need further informations?

Thank you all in advance.