Thank you for your help unfortunately the orientation does not change the behavior i always get the z-seam at my pocket...
A workaround for this problem is to use two separate models, one inner model and one outer "shell" which is only one line thickness thick. But this is VERY inconvenient! And even if i do it that way, the speed of the print is changing at the pocket location. If i just print the outer shell alone, i do not get any change in the printing speed and i get a consistent wall.
Halter_Lichterkette-Körper.stl
Halter_Lichterkette-Körper001.stl
AI3MSPRO_Halter_Lichterkette-Körper.3mf