A method is provided to measure an overall image quality score for a remote desktop on a first computer and accessed from a second computer. The method includes playing a video timestamp on the remote desktop at the first computer where the video timestamp includes unique timestamps, screen capturing first computer frames of the remote desktop at the first computer and second computer frames of the remote desktop at the second computer at the same time, determining a frame image quality score for each second computer frame by comparing the client screen to a corresponding baseline first computer frame, and determining the overall image quality score for the remote desktop from frame image quality scores of the second computer frames.