I waited two days for this to render and then aborted this morning, unable to wait any longer. Bryce still has a bad way of calculating renders for things that can't be seen. Since this boat is textured with a complex cloud/fog pattern, there's a lot of unseen rays and strange bounces. Some of the pieces are still in their original textures (this is a ship I was given – not one I made) which is what you see through the shimmer. The chunky bits are the unfinished parts.