Use the latest dev builds, Wind Waker is much faster there. 4.0 will force LLE audio, and thus, you won't be fast enough to run it or even close.
Twilight Princess is extremely hard to run, as is Skyward Sword (fairly difficult, at least) so I'm not surprised.
Super Mario Galaxy 1/2 require at least a Core i5 2500K at stock to run full speed most of the time, so I'm really, really not surprised you're having trouble on 4.0. Try latest dev builds.
Super Mario Sunshine should run ok most of the time.
Resident Evil games, especially 4, are also pretty tough even on my core i5 3570K, which is much, much, much better than your computer. You may want to turn EFB2Ram off, your CPU probably isn't fast enough to handle it in any game. EFB2Texture is what I'd recommend.
Twilight Princess is extremely hard to run, as is Skyward Sword (fairly difficult, at least) so I'm not surprised.
Super Mario Galaxy 1/2 require at least a Core i5 2500K at stock to run full speed most of the time, so I'm really, really not surprised you're having trouble on 4.0. Try latest dev builds.
Super Mario Sunshine should run ok most of the time.
Resident Evil games, especially 4, are also pretty tough even on my core i5 3570K, which is much, much, much better than your computer. You may want to turn EFB2Ram off, your CPU probably isn't fast enough to handle it in any game. EFB2Texture is what I'd recommend.