I used this render to test the new denoise function in blender - I rendered the animation with 24 samples.
you can download the blend file here - to run it you have to use a blender 2.79 build, the denoiser is not available in 2.78.
microdisplacement denoise test
denoising blender animations with opencv and python
blender 2.80 experiment 4 - vertex hook
blender 2.80 experiment 3 - displacement