Hello My friend and I have exactly the same model Asus laptop. When I run a sequence on mine, during some animations I get shuddering on the projected image which doesn't show up on my laptop screen. When running the same sequence on my friend's it runs smoothly on both the laptop image and the projected image. We have checked that the graphics card and settings are the same and checked the refresh rate. The only difference I can see is, being the same model, they are both supposed to be 1600x900 screen resolution but mine is 1920x1080 although when I change mine to 1600x900 or to 1400x1050 which is the projector resolution it makes no difference and still shudders. I'm now at my wits end. Can anyone out there help?