We have a Projector system with 3 projectors all showing duplicated images form a powered VGA matrix. When I run them from the booth no problem at all, but when I run them from the stage the image shifts about 1/10 to the left. The stage is 100' further away so I thought it was a loss of signal. When a connected an amplifier there was no change. All cables are high quality and the only main differences it is it a different input on the Matrix. It is about 100' further. And we are using a laptop not the projection computer in the booth. I have tried switching the matrix inputs and that did not fix it. The only thing that I have not tried is changing the computer. it there anything else I should try? is there anything I am missing?