Upsetting artefacts on the same layers as support interfaces
Hi all, I've been getting these irritating line issues when printing parts that have supports / overhangs (shown in picture 1). They seem to correspond to decreases in fan speed for just those layers, which seem to correspond to the presence of overhangs or support interfaces in those layers.
You can see this in-person in picture 2, but this has been happening for a while now, always in the same places. I'm printing Elegoo's PETG-Rapid at 250C with plenty of drying time on an AD5M. 0.2mm layers, 0.4mm nozzle, most everything else set to Orca's "Elegoo PETG Rapid" preset.
Any ideas on how to stop Orcaslicer from altering the fan speed for the rest of the layer while still cooling the overhangs/interfaces properly?
Any other critiques on print quality, settings, etc. are appreciated!