The mentioned qc-usb driver seems to do some filtering. IIRC when I played with that 15-20 years ago qc-usb produced distinctly blurry images with slightly was

The mentioned qc-usb driver seems to do some filtering. IIRC when I played with that 15-20 years ago qc-usb produced distinctly blurry images with slightly washed out colors, while the original windows driver produced images that are sharp, very noisy and with somewhat unnaturaly vivid colors.