GPU usage on WLO is minimal in any case. This game doesn't use vectors, shaders, textures, anything. It's a bunch of pre-rendered pictures placed together one over another. It's a strange way to develop but it brings "nice anime graphics".

I tried the game on a Atom (N5xx series, 2 cores 4 threads) using both Linux a Windows and yes, it sucks running WLO.

I play on a Athlon X2 4000+ (2.2 Ghz dual) and a XFX 8600GT OC'd. I also tried with the onboard vga (GF 6100), same result.

My guess:

*A "minimal" VGA is required (excluding via, sis, intel... nforce 4/6 will do the trick).
*CPU still is more important. I tried wonderland on a Phenom X6 1090t and there you can run a lot of accounts fluently... but it still eats the CPU. So, WLO will use everything it finds unless you limit it.

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Really an Atom N3xx can defeat a P4 HT 3.0 Ghz? maybe God exists after all.