This CrossBilateral mpv shader works very well.
https://gist.github.com/igv/a015fc88...1820ad89555637
I hope you will port it inside madVR soon!
Could you bring the one-pass AdaptiveSharpen back into madVR?
https://gist.github.com/igv/8a77e4eb...bb94c1c50c317e
It uses much less gpu and looks pretty good.