snoopy80 on rage3d.com:
"Hey, great news. Just installed the 4.1 cats, and to my disappointment, GPL
was still broken. So I ***** in the forum a bit, and Anemotion posts the
solution to our problem. It's on page 5 of the 4.1 Catalyst thread. In
short, in your Core.ini file, change
DirectMirrorRendering from 1 to 0. It fixed the problem for me. Now we can
enjoy GPL while being able to use new drivers. Hurra!
Adam"
I have one caveat to add to this: When I tried some back-of-the-pack starts
with Cat4.1, my car and much of the lower half of the screen was gone, and
only reappeared after the race got under way. I despaired, but after trying
various things, I reduced the Graphics Detail Bias in GPL just slightly from
max detail. This seems to fix the problem.
Now on my 2.4ghz AthlonXP + 9700pro I'm seeing 36fps back-of-the-pack starts
at 1280x1024 with 6xFSAA 16xAA with all the detail sliders maxed, except as
noted above! Yay!!
rms