An LCD has to buffer the entire frame, then process it, then display it, and there&#x27;s also a small delay for the crystals to transition to the new frame.<p>Meanwhile, a CRT shows the frame as it&#x27;s still being transmitted, while the source computer is streaming each line out from the video buffer, with only a negligible delay (analog electron beams are fast!).  This means a maximum of a 1&#x2F;60-second delay even if the source is composing the whole frame beforehand (double buffering).<p>If the source is doing computation between the scan lines (very common and even necessary on old systems, like the Atari VCS) that delay can be shrunk even further.