First off, try DX9. I couldn't run it on my laptop at all, running it on an earlier version allowed me to run it.
As for other problems, one thing I've observed is that the Gas Mortar causes a lot of framerate drops to the point where I'm calling it the "lag grenade", though "lag frag" might be better in hindsight. They're really good at breaking enemy ship components and dealing with planes, and are very spammable. If you can't stand the framerate drops, avoid using those and ask teammates if they can use a build without them until they're fixed, as they seem to be a major source of framerate drops in Alliance.
Someone also mentioned to me a memory leak issue a few weeks ago, I don't know the specifics on that one or if it is even true, but it is a possibility given the amount of changes they have made. If it's true, restarting the game might give a few frames back.
