Best Connection with Airport Express for gaming

Can anyone help me with how I can get the strongest connection from my Airport Express to my PS3 for gaming.

I recently upgraded my old Airport Extreme to an Airport express and everything is great. My internet speeds from the wall are around 90mbps and ruining my laptop and devices from my Airport Express are around 70mbps which I can live with.

When my PS3 is connected it only received around 10mbps which is a massive decrease.

Can anyone help with the best settings for the PS3 to speed it up. My old Airport Extreme used to connected at around 45mbps which was great.

Anyone????????????????