Its probably known but I though I should bring it. As you can see if selecting EFB copy to RAM instead of texture, half screen get low-native resolution while other is fine. Games that need it then have this problem. Its not game specific, all should be same. Because its is important for some to have it set so(Metroid, ZeldaWW&TP etc..), gameplay experience lower. Am still glad though that it at least do what it is supposed to - fix some games. But if its somehow possible...
R5186 x64. BTW SSAA doesn't help to make picture as good as "to texture" at all.
E7400 @ 3.6Ghz 1.33v, GTX-260 192SP 650/1400/1100/1.05v, 4Gb RAM, Windows Server 2008 x86