Hi Bob, thanks for your reply. I have rechecked my extruder, but it was actually extruding less filament then it should. So first I fixed that and then I started printing cubes to test the extruder multiplier. I got the infill to connect with the perimeters at 0.90. The problem is much less now, but it keeps vibrating on in the infill in the edge. It seems like it tries to drag the nozzle trough an area that is just a little to narrow.
I'm using slic3r for slicing.
If you have any other ideas how to get rid of this vibrating problem please let me know!
thanks!