Im on a 1.3 AMD Athlon, 768 megs ram, Windows XP, 64 meg G-force 2 card.
Looks like it your video Card bud, get at least a 64 meg card.
I am enough of an artist to draw freely upon my imagination, knowledge is limited, imagination encircles the world. (Albert Einstein)
https://www.artstation.com/kurtb