Hi all,

I've got some billboards(static mesh) stacked up that flicker a lot when viewed . Looks like z-fighting but there is plenty of distance between each mesh. It's basically an asteroid field. The rocks in the back draw on top of rocks in the middle, or some varied combination of this type of thing. I've looked into 'depth priority' settings in render props, but this doesn't seem to help. Anybody gots some thoughts on this?

Also, the scale of this level is very large, with these meshes well out of range of the grid. There are two lighting/UV mapping channels, with one for lightmaps.

One more strange thing. While viewing in editor, if I roll mouse wheel, it seems the draw order alternates in a predictable, repeating way...like I'm scrolling through some preset render settings or something.