The Ideal Projector distance depends on few factors such as:-

>the throw ration of projector >the size of your impact screen >your preferred aspect ratio

Most golf simulator setups use short-throw projectors, which typically need to be placed 4-8 feet from the screen to avoid shadows and maintain a clear image. Standard projectors may require 10-15 feet or more. Reference your projector’s manual to check the projector’s throw ratio—divide the throw distance by the screen width to ensure proper sizing.