But when you want to use frame dependent peripherals such as OLD 3D famicom glasses or the Zapper, then this becomes an issue. Better bring out your old fat analog tv as there really isn't any better solution.
Last thing I read about bringing down the latency was that nvidia was going to add some additional hardware into monitors which would talk to the graphics card in your computer bringing down the latency to almost 0 (if not 0). Read about it here: http://www.geforce.com/hardware/technol ... technology
As for with HDTVs, I have no clue. It doesn't seem to be a priority at all. But with monitors the new IPS monitors are down to 9ms or so.
LG claims for example this IPS monitor has 5ms: http://www.lg.com/us/monitors/lg-27EA33V-led-monitor
While at displaylag (http://www.displaylag.com/display-database/) they've measured it to 9ms in average.
@Fudoh Yes it does register that as you claim. However for actual gaming this won't work so great as in a few games there are multiple targets. But for Duck Hunt I guess this cheat would work perfectly, hahaha
Also another note, even if you somehow modify the zapper to register with delay, the game itself (Duck Hunt) would expect the signal to come at that certain frame it was shown. So the only solution would be to reprogram the game itself
But that kinda feels pointless 
