Are we in flight shooting competition where people use razor blades for fletching in order to maximize speed at any and all costs?
Why this interest in EXTREMELY light weight strings? What happens when you cut a strand that goes around the bow tip as you cross an old downed barbed wire fence, or if you get a little sand/dirt in the bottom loop, or should you cut even just 1 or 2 strands with a broadhead?
Not me. I personally would never shoot less than 9 strands, and that is an extreme minimum for me even on a kid bow. Most of my bows have 12 strands of dynaflight.
So you get 1 or if you are lucky 2 fps more speed than a safer more durable string...but at what cost?
If you want to maximize speed of your bow set up, get rid of the limb tip mass out past the string groove as that doesn't do anything for your bow. In fact, tip mass not only reduces efficiency, but also adds handshock.
These ultralight weight strings are going to cost someone their bow...and possibly worse.