> What are typical delays introduced by the emulation layer in MAME compared to > original hardware? Have their been any measurements or blind tests?
An emulator (MAME or any other) will have at least 1 video frame of latency, and at least 2 if you enable triple buffering. This is on top of any latency that the game's original hardware/software have, of course. It's well known that modern consoles tend to have quite a bit, and even back in the 1980s games often had at least a couple of frames of joystick-to-eyeball latency. Space Invaders runs slower when all the invaders are alive, for instance, but that works well with the gameplay since you get better latency when you need it, towards the end of each stage
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