creating madVR Profile Groups if necessary
this is v straightforward if all you're doing is switching between bd and dvd quality sources. It looks like it gets much more involved if have a wide variety of content & the UI is not the friendliest as there is no obvious way, that I have found, to verify that file X will hit profile Y except for playing them back one by one.
As an example, my profile is just
if (srcHeight < 577) and (deintFps < 31) "SD 24fps"
elseif (srcHeight < 577) "SD"
elseif (deintFps < 26) "1080p24"
else "1080p60"
My approach was to pick out a file of each type that I (seem to) have (means 1080p, 1080i, 576p, 576i) along with a few variants for the SD stuff (animation, tv etc). I then walked through them cranking up settings until it reported dropped frames in the madvr stats, I would then back off a setting here or there to see what bought it back into line. In total, this took <1hr... mainly because I could barely see any difference between most of the settings, I'm obviously not a pixel peeper
If you are short of time then I would concentrate on the 3D LUT.