Given it's an alpha build it is rather heavy on ram even sitting around doing nothing (fresh game at the beach, nothing done, 1.6gb). I'm assuming you might have a fair few processes running in the background as well and who knows how near your 4gb that takes you which would put strain on it, as well as it seems to enjoy switching between one and two cores at the moment. Also as it's a laptop, you are playing this without any special profiles enabled for power saving or the like yes? Perhaps go through the default settings for your graphics adapter and power saving options, as well as checking through task manager which processes are running that you don't strictly need whilst gaming.
After all that have a look and see what your framerate gets to, if no change We'll need to assume that it's something about your build at the moment that the game doesn't like, but all that will eventually get cleared up and when that happens your pc should meet the requirements safely.
Thank you for your suggestions. I followed all of them, and also lowered the resolution to 1366x768. Even on the lowest settings, however, I still only get ~25fps at most. I know it's alpha, so I'm not worried, but I just thought I'd include my information in case it proves useful during optimization
