Apologies if this has already been discussed, I searched but was not able to find a solution. My RetroPie setup connects to the TV via HDMI and for some reason my Emulation Station screen appears cropped. This happens on a 52″ TV and on a 24″ TV as well.
Also, on the 24″ TV, the NES emulator takes up the whole screen and on the 52″ TV the NES emulator appears smaller. I haven’t tried with other emulators at the moment so not sure if it happens with others.