Delay in the game

can some one help me out with a small problem i have i just bought a brand new vdo card n everything n the graphics seem to be working fine but its jus that as im playin 06 the players react a bit slow after i press the key n while im hlding the superstar trigger sometimes they dont do the move wen dey r suppose 2 i hav nba 06 for ps2 n its woking fine dey react wen dey r suppose 2 but now dey dunt for instance i was using dwayne wade in mia vs dey n he got the steal as he went in for a superstar dunk from a bit pass the free throw line he jus stood under the hoop n den i had 2 press the button again i can easily do this on my ps2. cud this be a game prblm or the keyboard cuz the game isnt laggy or anything like that its fine jus dat reaction is like a second slow..

try to select lower settings; or make sure that the video card's driver is properly installed; you know when it comes to technical problems there are many factors that can contribute to the problem;you could also try uninstall and install the game
try it out and reply to me if its successfull