
Well... I tried to use your same config to see if that ate more memory or what... it seems not.
I noticed that PSsetup still uses 100% cpu, and that's already reported.
I also noticed another thing, that perhaps might help you.
Seems that you end crashing because the game eats all memory avaiable.
I've noticed that when I start the game, PS uses about 250 MB of memory. If I minimize the window, the cpu goes to 0 and mem usage to 30 MB, when restoring, memory raises up from that value. I haven't tested for a long period of time (sorry) but it achieved something like 65 MB.
Perhaps this can be a workaround for you. Join the game, see how much ram uses, minimize it, see if cpu goes to 0, and mem usage reduces greatly, click again to bring the screen back on, monitor ram usage... if with this method you manage to lower the mem usage value, then this may be your workaround for playing the game :S
Edit: Changed RAM for memory. More precise.
