Wow, great stuff guys. I’ve just gone through the same with an organic type part with many overhang walls in PETG-HF. Looking at it in ‘speed’ mode evidenced that the jockeying between overhang levels was changing the speed abruptly and leaving a very poor surface. Since the overhangs spanned the gamut from 10% to 100%+ overhang wall the only solution I found was to set them all to the lowest value, increased print time by about 10%.
The part (manifold):
Default speeds:
With speeds fixed to 15mm/s
I did play with the smooth coefficient a bit but could not get smooth transitions to show in speed mode, I only went as low as 10 though. It seems this brand new feature may only apply to certain line type transitions.
Too lazy to take before and after of the actual part but just imagine a wholly torn surface on the inside of the manifold versus a nearly perfectly smooth surface.