Before, this was followed by my computer getting that horrible corrupt graphics look where the pixels seem to inflate to 50 times their size and you are forced to shut down your computer.
99% of the time that's related to drivers or your GPU itself. Disregarding the fact that it's supposedly slowed (not removed! You just don't see it before the game crashes!) by the mod, I'd suspect the problem has nothing to do with the game in the first place.
Might be wise to update your drivers; if that doesn't help, you may want to look into testing a different graphics card, or running some other tests (like stress testing, for example -- benchmarking programs are good for this, and their nature will quickly cause your GPU to fail if it is indeed problematic, but if you're on a laptop, this would probably be a quick way to generate an ill-advised amount of heat as well)
If you're on a laptop... Well, that sucks, but that's the grit of why laptop manufacturers,
with the exception of Alienware, who cater solely to people with absolutely absurd amounts of cash, don't market towards gamers.
Apparently some allow you to replace the graphics chip. But I wouldn't count on that under any circumstances.
EDIT: "1.3 million memory" doesn't say much. I'll assume you mean kilobytes (KB, or sometimes represented with just the K), which doesn't mean much of anything. That's 1.3 GB, which is STILL nowhere close to the 2GB limit for programs on 32-bit architectures.