Quote: "i think x9 has a memory cap if im not mistaken"
It's a 32-Bit limitation that applies to FPS Creator x10 as well, the "memory cap" in FPSC is just an optional helper that stops building the game when around 1.85 gb of memory is consumed.
It can be turned off though, but that means, whenever more than 2 GB is consumed, the application may crash - and this is not
a FPS Creator only problem, but a general 32-Bit application problem.
So: there are no differences between the x9 and x10 FPS Creator in terms of "memory cap".
Quote: "also with mystic mod you get x2 map size"
Which is useless since FPS Creator isn't optimized to support such a map size, heck, it isn't even optimized enough to support the current grid - so why bother with making it even bigger when the engine's simply not powerful enough?