Frustrating Top Surface Weirdness
I recently connected my Palette 2 using with the PrusaSlicer. I finally have it working where most of my prints are coming out nicely. Colors change is synced perfectly, but this one little guy is a nightmare and it has something to do with the teal Polyterra PLA. There's either weird gaps or what looks like dragging filament. The yellow had close to this problem but it was resolved.
I decided to temporarily try the same model in Canvas, and it came out much better (though not perfect), but like a curse, the arms popped right off. The PrusaSlicer versions are strong. I tried fiddling with speed, heat, gap filling, perimeter layers, retraction settings, extrusion multiplier, lowered the layer heights using the heigh modifier and even keyed in the settings I have in Canvas. I'm using the Creality S1 with .02 layer height. The model itself is about 1.75" height. I love the matte Polyterra colors, so I'm hoping to get this resolved. Thanks for any suggestions. I'm must have 12 messed up scorpions on my desk which is 12 hours of getting no where. 
RE: Frustrating Top Surface Weirdness
@jcat
I don't have your project so I can't be to specific, but for sure you should switch to using the Original perimeter generator, the Arachne generator is giving you poor results, in the form of badly extruded perimeters. reverting to the Original perimeter generator, now called "classic" should clean this up. You may find yourself not wanting to use Arachne much at all and having to change back to the Original perimeter generator for most projects, I personally just use version 2.4.2 of PS before they started to force this ridiculousness on us. you also appear to have some over extrusion going on relative to the top solid fill, I would run a test and see if using the Original perimeter generator will help that as well, however it's possible it's a different issue.