This is basically working as it should, if you look in the rsx debugger. With keyboard handler set to windows I wrote what you see below. Some key presses were missed...
A spamy log: http://pastebin.com/rChRRaJv
A spamy log: http://pastebin.com/rChRRaJv
Asus N55SF, i7-2670QM (~2,8 ghz under typical load), GeForce GT 555M (only OpenGL)