I kind of feel with the clutch people are possibly over doing it, what I noticed is it's a high strung setup out of the box, set nearly flush on the preload, you can wind it in a little, but it's also a progressively slipping shoe also, so start cranking on that preload, and you will likely burn shoes and just overheat it in general, possibly making other things like the two speed harder to tune.
My five did suffer some odd two speed warm up issues in one heat on the weekend, took a good 4 laps to start shifting right, but most times it's fairly repeatable in setting, I started putting just a tiny bit of grease on the roller pins also, not sure if it's helped, or created that weird warm up lag I got.
In terms of setup, I know mine has usually been good in most ways regardless of some settings, I will say though that I tried the 'full' Rob P setup at one point, and it had too much of everything, making it fast, but a handful so ended up slow for me (I'm likely just not that good).
I'd say for lots of guys though, something along the lines of, two hole pistons front, 2.2mm rear bar, maybe light blues front, purples rear, depending on traction, I think softer oils suit the car (in shocks and diff), but not everyone is finding that.
Go long top rear links, big tip there is to use steering ball links on one end so they don't risk pulling out, play with roll centers depending on traction, narrow track works well for me, also small length link tweaks on the front bar make a noticeable change depending what your chasing.