It appears that some applications defaults to my "weak" graphics card: nvidia quadro 410.
Photoshop states this explicitly (Open GL via 410) in the settings.
It cripples the whole machine - everything lags. I suspect it's the same when i render video, since also Skype video will make the whole...
Using the new UEFI uh1 BIOS on the gigabyte GA-Z68 UD3H-B3 board I do not see any option for USB 3.0 and USB 3.0 Turbo.
The fix to get PCIe to run at 16x rather than 8x used to be to turn off the USB 3.0 in the BIOS, but now I don't even see that option.
So, my card is running at 8x on...