Slowdowns since upgrading to Windows 7/DX10

[superjupi]

I did provide settings, if you read my second paragraph - any. Any D3D internal res (that isn't absurdly high, anyway), any AA, any anything, makes no difference. Just using DX10 hardware mode yields these results. It's always a drop to 70%, regardless of any settings or game tested. It's a bit like the frame limiter randomly decides that 41 fps is what it should be limited to, rather than 60. The cure seems to be going back to DX9.

I'm not so much asking for support as pointing out the issue, so even if no attempt at support is given, I will not be offended.

[andutrache]

right click pcsx2.exe ->properties->compatibility->check disable desktop composition.
It will automatically disable aero when you run pcsx2