Fan Horns.. really could use some help, please.

Hey folks.. I'm still trying to dial in the settings for my rapido uhf with a 0.6mm nozzle..

My printing starts are as follow:

Filament: PETG
Temp: 235 first layer, 230
Bed: PEI, heat at 90FL, 85
Max speed: 35mm/s
Max Volumetric speed: 20mm3/s
Cooling: 10% across the board and disabled for first 5 layers.

Perimeters at 4
Horizontal shells at 5 for both bottom and top
Slicing at 0.2mm base layer and 0.3mm first layer.
Infill at 25% Rectilinear
No skirt, no brim
Speed are ranging from 10 to 35mm/s
Accelerations are all at 5500mm/s2
Width: First layer at 0.45mm, all others at 0.4mm

PA is at 0.68
Extrusion Multiplier is at 0.98

As you ca see from the photos, as soon as the print starts the horns, that's where things get rough.. first, you can see the vertical line (highlighted in blue) on the outer surface and this is from the infill space that is printed internally.. the second is that the horns are printed so rough and it becomes prominent the highs the print..

I'm not sure what Barone I should be concentrating my efforts on as I feel like I've tried everything.. any advice would be appreciated.