I'm not sure about the hypervue bug. Have you tried to render to a larger size? Try to render a few frames at, say, 10241024 or 12081280 then compare stars are tiny points, but to be realistic they have some "flare" (I hope it's a correct word) and it is possible that the flickering is due to insufficient pixels in the render - when the camera moves, if the renderer has too few pixels at hand it must choose if to render the brigther centre or the flare. That may be a posible cause. We'll find out if true or not if you render larger.