I’m having an issue with slicer only applying a single layer to non horizontal or vertical planes. Anywhere that I have a surface that isn’t at 90 or 0 degrees, slicer is only making one pass over it. I have both the perimeter and top/bottom set to 4.
Check is good. That’s strange, I know Slic3r has a problem with this feature, but I got this only at very low layer heights. Which Slic3r version are you running, whats your layer height?
You could work around this with a hughe amount of top layers (check the 3D preview if it’s OK), but thats not how it should be.