@Kohlendioxidus - Confirmed. H.A.W.X. DX10 only runs on GPU2 on my PC with these drivers, same bug as 10.6 betas. Here's a couple of screenshots taken from the game, the first with the 10.4 drivers from April 2010 and then another with the 10.6 drivers taken today. H.A.W.X. DX10 Screenshot (Catalyst 10.4) H.A.W.X. DX10 Screenshot (Catalyst 10.6) Sorry that it's hard to read but if you click on them to zoom in you can make out that in the first shot GPU is even at 28% each but in the second only GPU2 is being used (57%). By the way, GPU2 is actually GPU1 and vice versa (a 'quirk' with MSI Afterburner).