Overhang problem

Hello, i'm out of ideas what's the problem.On overhangs the outer line wraps up and for this the outer radius looks terrible..The rest looks good to me.Don't know how I can solve this problem..V-Croe 3.1 400 enclosed,ASA 250°C ,Bed 115°C ,Chamber 55°C.20% part cooling fan starts on 3rd layer fan is the Sanyo Denki 4028 .Flow multiplier 0.9. Slicer is orca.. Outer perimeter speed 60mm/s. Have somebody an idea, please..