I do *NOT* like SpeedShine as a clay lube, not a bit compared to, say...Glyde. Too much wax/stuff for my taste.
As a QD, I've simply never had any issues with it :nixweiss I do use it pretty sparingly though, maybe that's the key. I've only used it a few times with my Shamrock MFs, and it worked OK, but it did have the usual "drying a liquid with a plush MF" issues, where it wants to leave residue/tiny drops of the liquid behind. Gotta buff buff buff, refolding the MF to expose a dry section; I'll go through a few Shamrocks on even a small vehicle. Because of that kind of thing, I usually use SpeedShine with WWMFs (while drying, a little bit of water doesn't hurt anything). Try using less SpeedShine, and make sure the part of the Shamrock doing the drying isn't already too wet. And if it still gives you trouble, switch to a very soft WWMF (which will have to be laundered very thoroughly to get all the SpeedShine stuff out).
Heh heh, the separation gets pretty extreme if you let it sit long enough...like a layer of wax over top of the liquid. No problems though, and some of my SpeedShine is getting mighty old (I don't mean just a year or two

).
I only use their Vinyl/Rubber Dressing for exterior stuff in an attempt to use it up

It just doesn't last long enough for me. Yeah, it looks OK, but so does Zaino Z16, and that stuff lasts for a nice long time. No way am I gonna redress stuff every week, or even after every wash.