Direct3D = Uses GPU for graphics hardware based overlay reproduction. This means less pressure on the CPU, and also removes/reduces the instances of tearing on the PC monitor
DirectDraw = Uses the CPU for software-based overlay reproduction. This uses the CPU and will have a slight hit on performance. Can result in overlay tearing if using a large preview window. Compatible with a larger number of legacy graphics cards.
DirectDraw = Uses the CPU for software-based overlay reproduction. This uses the CPU and will have a slight hit on performance. Can result in overlay tearing if using a large preview window. Compatible with a larger number of legacy graphics cards.
