Thanks for clearing it up. Perhaps in the future OSB 2 could have an option to render/double buffer using the CPU, GPU, or even balanced between both, allowing the user to choose. This would let the user put the majority of the strain on the processing unit that they see most fit. If users have a higher end CPU and lower end GPU, they could choose to use the CPU for rendering and double buffering, or vice versa. It could be a nice feature to give botters the control.