At more than 20 light sources it's taking 16k samples per pixel to get even close to a clean result while I needed no more than 4k when it was just a couple of lights and much softer lighting, so I need to work on the light sampling logic at some point. From an interactivity point of view it's taking only about a minute to get a reasonable looking preview, though, so it's not all bad. Actually, the slowest part was exporting all the geo from Maya on every update, so I added a "lazy geo" option to the render globals in the Maya translator.
2k film res, 16 bounces and 1.5 mill polys:
-Espen
