I tried many things including editors, crowd files, wad and so on. At the end it's ok for me that I don't know how to turn off the flags
. Actually the flashes can be turned off, which is great, and the flags are ok.
But the lines of crowd with the whole grandstand colors looking through this is really something that should have been solved by the original GP4 creators. But as all of the last years there was not mod or tool to change this, I suppose that most of the GP4 player just have a good graphics card and so there is no need to solve this if the problem is not existing on better hardware.
My initial thought when I started this topic was indeed that perhaps some LOD or texture setting could help.
Normally just the crowd image should be static and stay before the grandstand color textures. And if the distance is too far, the LOD of - first - the grandstand and then of the crowd should be reduced to 0 in one step = disappear.
But all this is too difficult for me as I don't know anything about IT. After all GP4 works fine and is a great game especially playing with wheel, but the crowd is not so beautiful
.