I'm having issues with lower layers perimeter quality. Usualy it's happaning when upper layer perimeter overhangs sligtly on the layer below. Like overhang, but very low angles that usualy don't cause problems, and with constant angle upper layers are perfect (beyond 3-4mm height). See the picture attached - found it on web just for reference. Similar issues I am experiencing Anyone know what's the cause? Bed too hot?