Hi,

you could be experiencing problems from a number of things....

1: Hardware..... your graphics card may not be up to the job or, if it is adequate, try installing the latest driver.

2: if you have the display renderer set to High Quality Rendering it could be slowing things down.

3: if you've got the Hardware Texturing Resolution for the shader to the highest resoution it may slow your system down.

I hope that it is one of these things as I can't think of anything else off the top of my head.

Nice site by the way,

Mat.