I got to agree on that East West problem.
Even though I like East West, it eats up a lot of memory. I had like up to 16 tracks when I tried it and it already complained (I'm using FL Studio 10 as my DAW in Windows, by the way) but my memory was up to 2.2 GB anyway, so I thought it was just my computer.
Anyway I'm pretty sure graphic card won't have any effect on it whatsoever, because graphic card is a matter of display (If you have too much 3D graphics displayed on your DAW/having dual display, then its graphic card issue if computer becomes slower and laggy, but won't effect your audio result at all). However, low on memory/intensive CPU can get your DAW to work slowly/crash, or even stop your computer.
I used East West symphonic orchestra Gold, and I saw that each instrument takes around 150 MB memory in average, so 44 tracks probably takes around 6.6 GB, so it should be not problem for your computer spec. I'm guessing its the PLAY that does not keep up with the CPU, but I don't really know how intensive it would be in your current DAW.
About your music, I really love the intro. A magical start for tales is always working for me.
As a whole, I feel safe, and its a very charming place, huge, and majestic as a home. Its like a magical castle or something with a lot of nice people inside. I hope I get it right.
I also really love your transition on being loud and becoming so thin (0:28 - 1:17), as if I was entering a big gate of the castle, went to a big arcade, to the alley, until I reach my own small place there.
Thanks for sharing, by the way!