In our DirectX 9 based game Istanbul Kiyamet Vakti:
we have the problem of triangle flicker accross the whole screen occasionally only on Radeon cards.
The game is an MMORPG and has over 700K registered and 15K daily unique players in Turkey.
Here are some screenshots and some related driver update notes.
How can we solve the problem for our gamers?
We dont want to tell our players to switch to another graphics card brand cause we believe in competition and its positive outcomes.
P.S: I can send some DXdiag files as well.