Ghost Squad (NTSC) performance..?

[miseryguts]

Just wondering if there is something specific i need to do (or particular settings i need to apply) in order to get decent performance on this game, as it currently runs poorly.. slow, jerky & looks very ugly/low res.. oddly though i am using exactly the same settings as i use for Xenoblade Chronicles which runs superbly & looks fantastic..?

Direct3D11
1920x1200
Internal Resolution: Auto
AA: x4
AF: x16

i7 920 (3.2Ghz oc)
2GB HD 5870 (oc)
16GB DDR

Anybody got any ideas..?

Thanks.