If you want to try the "Unlock" patch (which attempts to render full frames instead of the default double-field rendering), you have to manually create or enable a .pnach file.
// God of War II (NTSC-U) - SCUS-97399 // 60 FPS Patch Code / Frame Rate Fix patch=1,EE,20295D34,extended,00000000 patch=1,EE,20349A0C,extended,3C014270 Use code with caution. : Tells the system to actively enforce the line. EE : Targets the Emotion Engine emulation layer. 20295D34 : Memory address regulating game speed loops. god of war 2 60fps patch code