i could see how control to readout lag could be annoying. yeah... it drives me crazy when a browser lags and you can't frame text that's always jumping up or hiding under the table when think you got it. this is handy stuff to learn for sure.

along similar lines though, it drove me crazy having to wait for either the "strings to settle" or the tuner to lock on tuning a guitar and if memory serves me right, it took 2-3 seconds for the (cheap) analogue metered tuner to settle on each note, but i got used to the play... wait for it... then adjust game. external tuners can be very cheap.