Do the Mac get different updates from Window users ?

Because i've noticed that after the recent major change in the game's design with added missions, ranks and other modifications, Spiral has been very "laggy." I'm not sure if I am the only one experiencing this because apparently all my friends run Spiral on Windows(all of us play through Steam). And they don't seem to be affected - well, maybe occasionally. But it still is a big problem for me, Spiral is one of the few great games platformed on a Mac, I don't want to have issues with it :/

I've checked my system requirements and exceeds all of the prerequisites. I've checked my network, changing from wired to wireless. I've changed the game's graphics to the lowest(antialiasing x1, cull transients turned on, compatibility mode turned on, lowest hertz).
But the game still lags ! :(

I had a hunch that maybe the Mac updates were not really put up very well, so I was just wondering if it had different updates from Windows - it shouldn't be, right ?

It'd be a great help if you could answer my question. Then I would know where to start fixing the problem.

All of you Mac [and maybe Windows ;)] users out there !! If you guys are experiencing the same problem, I hope this thread helps :)