I'm running 1.3.1.
So, I got your dll file and it's a huuuuuuge difference: I'm getting stable FPS and no lag whatsoever anymore, whilst before the game was getting into nasty crawls. I was surprised to know that the biggest hit in performance came from [x] Science and not from the visual eye candy mods that I've installed. And since I'm running KSP on a laptop with a mid range GPU and a dual-core i7, I need every help I can get to stabilize things =).
And I'd even suggest to the developer a "[x] Science Lite" version without the whole list of science points, building upon John007qwe's concept, leaving just the science gattering feature available. I really like what the mod brings to the table, being one of the "mandatory" mods in all my installs and saves for quite some time now, but I think that I used the full list once, when I installed it for the first time.
Anyways, this is just a suggestion because I know that maintaining things takes time and effort and being a developer in training, I really appreciate that.