Hey, when I load a mesh into Blitz and then try to navigate around and within it, parts of it disappear as I move away from it. Here is an image of my problem. The images from left to right show me gradually 'walking' backwards in real time. Look at the stuff disappear:

Why does this happen? How can I fix it?
Thanks for all your help guys.

Why does this happen? How can I fix it?
Thanks for all your help guys.