Speed and cooling setting help for outer finish

Hi Lexi - awesome thanks - here are my settings:

Filament is normal / standard Black Overture PLA from Amazon

Filament Settings:

Cooling Setting:

.4 nozzle / textured PEI Plate
Quality default
Strength default

Speed Settings:

First layer 25
Outer Wall 25
Top Surface 25 (which may not apply here)
First Layer 250
Slow down for overhangs IS checked (I wonder if that may be it)
The rest are default

here is the layer time color map - I don’t see any variances, changing any of the Color schemes just show solid consistent color throughout.

image

Thanks for taking a look