Can you check out if you have the same problem when you remove that DLL from your project?
It happens without the DLL. The problem appears if I have more than one stage. I think, the more stages I have in a chain the heavier the errors are. At least I haven´t noticed them yet when using just one stage.
Take for example a simple bloom shader: -render the camera image into a texture and set a camera stage which makes dark parts black. -downsample that stage -blur it into x-direction -blur it into y-direction -upsample and combine it with the previously rendered texture
