Isn't Silent Hill: Shattered Memories a problem title? I think i saw a few threads about performance issues with that game. If you are concerned about performance, please do your tests with more common games, so the issue can be pinned down better.
And why do you use OpenAL audio? I think on windows it's highly recommended to use xaudio.
Can you enable per pixel lighting for a test? It should make things slower, but if it makes things faster, it would indicate a driver problem with not switching into high performance mode correctly.
And why do you use OpenAL audio? I think on windows it's highly recommended to use xaudio.
Can you enable per pixel lighting for a test? It should make things slower, but if it makes things faster, it would indicate a driver problem with not switching into high performance mode correctly.