Now that I think of it, I've tried it on a machine with an AMD processor which was 2Ghz (don't remember the exact model) but it hadn't SSE3 support. SSE3 instructions are emulated on OSX86 which makes it inherently slower. And on my 2Ghz machine with 2Gb of ram the emulator was in fact slower than the device itself.
The Intel Atom has support for SSE3 instructions so it should work better but I believe the stability problems are still there.