I had one little thing that's just a query really. Does skymaxx have it's own VRAM usage that wouldn't show up in the rendering screen in x-plane? Only asking because yesterday I had some crazy black spikes shooting up everywhere when there were a lot of clouds, which from experience with other games usually means my card's memory is being taxed a bit too much, but the reading in x-plane still had nearly a gigabyte free. I'll try reducing the resolution to very high or high and see if that sorts it out, though it might just be a case if turning down the memory clock settings on my card.