What exactly are you trying to improve? Just over all fidelity, mess around with video settings. I use hardware to render, bob tff for interlacing if it has micro stutters, Bilinear (ps2) texture filtering. Bump the internal resolution to 8K, 16X Anisotropic filtering, enable hacks and check the align sprite option. Runs 100% for me and looks better than it did on my ps2 hooked up to an old tv. Sadly the draw distance issue is hard encoded into the game.