Have you adjusted the speed settings according to what the manufacturer says? LW-PLA can only be printed at a very low speed or else it clogs. It also needs constant speed. For example for colorfabb LW-PLA, I had to set all speeds to 40mm/s.

I don’t own an SLA printer. Where is the fuckup?

I don’t know any slicers that do it exactly as you described. I know that in OrcaSlicer you can print perimeters at set layer height, but infill only everey Xth layer.