The Evolve bolt takes a bit of tweaking to get the best out of it... I'm using one on my DM5.
Basically Evolve have cut the size of the spool chamber and reduced bolt friction. You'll need to up your operating pressure a bit to get the same FPS - I also noticed that the Ev bolt is much more sensitive to paint/barrel match.
The main advantage to the Ev bolt is that it has much less friction than stock, with the right lube* you can run your LPR back at 2-2.5 turns then progressivly dial back your dwell to increase efficiency.
*I'm use Evolve's cinnamon butter but Slick Honey is generally regarded to be the best lube.
