A method for performing video processing within a video display system includes: detecting whether dropping at least one frame is required; and when it is detected that dropping the at least one frame is required, removing at least one flip command from a command queue and selectively removing at least one video processing command from the command queue. An associated video processing circuit and an associated video display system are also provided. In particular, the video processing circuit is positioned within the video display system, where the video processing circuit includes a hardware module and a controller, and the controller operates according to the method.