Without seeing your mesh, I cannot know for sure, but I'm going to guess that 15k patches is overkill for your model. Unless you are doing ultra detailed modeling, like Agep (Stian Walvaag) you probably don't need that many patches. Also, 1000 5-point patches sounds suspiciously high. Can you post a shaded/wireframe image of your model?
Here are the images of the mesh.