I encountered a problem doing distant mountains with a low cloud layer. Dots. Black ones and white ones. If rendered RTA they even seem like poly's. What on earth could that be? The cloud is 1500m high at 1640 meter, sharpness 12, density 0.01, quality 3 (278 samples), blended by a distance shader with far distance 9000, near distance 1500m, atmo quality 64. Rendered at 0.5 and 4, GI:1/1/2 plus two fill lights. Looking north, sun in the west at elevation 12.
Any ideas, guys?