i just registered to add myself into the list of people haveing this freezes with ATI cards.
i got a ATI HD3870, and have this freezes in GT legends, and Race07. i dont know GTR or GTR2 as i dont like the simulated car class.
actually i can drive most tracks in GTL without problem, but i can reproduce the crash to 100% on any nordschleife track in GTL. that turned me off pretty much, so i tried to switch to race07 in order to drive the schleife without crash. and when i drive the ADAC version of the schleife in race07 i get exactly this same black out crash to 100% after the bend out of the karussell.
thats insanely frustrating, i have it in GTL and race 07 with a ATI card. i had the latest omega drivers till yesterday. than i installed the latest ATI ones, strange enough i have horrible performance with the ATI drivers in race07 compared to the omega ones, however the crash is still there. also i tried window mode...
however i didnt tried to play it with everything turned way down. should i try it!? i could report back this evening or tomorrow about how it worked.
this freeze is giving me maximum frustration, i cant play the only two race games i like becouse their freezing my whole system. ****

i had a Gf7950GT befor i got the ATI card, it never froze like that in GTL, i didnt ever played race07 with the 7950 card.