A static recurve has very little taper in thickness. Maybe a 1/16" at best on most of mine. I recurved them when they where thick so I could remove any possible cracks. The recurves where thinned down later in the build. I cant explain how thick or thin they need to be. You will just know when they are too fat and you will obviously know when they are too thin.
Static recurves have higher early string tension and smooth right out after you roll them over. Working recurves, or flipped tips as we call them add some early tension, but still draw allot like a flatbow. Performance wise? You got me. The static feels faster because of the draw it gives you. Im sure statics are faster, but I have no way to porve it.