SH3 Graphics problem

[Snowowl]

Hello,

I recently downloaded SH3 off Steam. I've run into a rather odd graphics problem.

Whenever I switch to the Bridge or periscope view(or any view outside of the control room), the screen becomes very pixelated.

I've checked Directx and my drivers, they don't seem to be the problem

System specs:

Vista 32-bit
Nvidea GeForce 6150

Any ideas on what could be causing this?

Thanks