I installed the trial on a virtual machine with a Pentium D @ 2.6GHz and I allocated 1.5GB of ram. That lagged worse than GTA 4 on a Celeron cpu and an Nvidia 5200 64mb gpu. Then I bumped the allocated ram up to 2GB. It didn't improve. Next, I copied the virtual machine over to my Core i7 pc. It got a little better but still unusable. After I allocated 4GB, it ran ok.
Windows 8 is cpu and ram heavy beyond fathomable reason.
I don't see how this is even going to run on smartphones and tablets with severely inefficient, bottle-necked arm cpus that are inferior to Pentium 3s.