Classic British Flight Sim

I have the dreaeded Blurries, normally only the scenery is affected not add on airports or aircraft, this can be cleared by reloading the terrain textures etc, but it goes again and its a pain anyway... I also have the problem of when I load a plane and look at it from the outside it takes an age to show the textures and ai traffic suffer as well as buildings etc, after a while all load up ok but the blurries persist. I have tried altering settings in the sim etc but with no joy. Any ideas or clues as what to start with ??
cheers Tony

Have you tried re doing the fs9.cfg Tony? xwink