F1 2010 F1 2010 'Out of sight bug'?

[skidmark33]

I apologise if this has been discussed elsewhere....

I have seen discussion of an 'out of sight' bug in F1 2011, where if you can't see the AI they go a secord or two a lap faster.

This is my experience in F1 2010.

If I can't see the AI it goes a second or more a lap faster and I have no hope of catching it.

If I can see the AI then I have good racing with it.

Two questions:
1) Am I right? Is there an 'out of sight bug' in F1 2010?
2) Is there a simple fix using an XML editor?

Thanks in advance !