Okay, I found a solution that works for me.
I have increased my first layer extrusion width to 250%, reduced the print speed of perimeters to 30mm/s, reduced the brim width to 1 and increased the infill/perimeter overlap to 30%.
This was PLA with off heat bed, printing on glass and used hairspray ad adhesive. Most of my settings were on default. (Repetier & Slic3r).