Very reactive system. Much better than WiFi. Much better than my iPhone via remote control (yuck!).
See if Canon remote is better? Anyway, the advantage of the computer is the conrôle image on the big screen
By cons: the batteries of the EOS are emptied in an hour (I have a set of 3).
Ideally a Gloxy GX-E14 Grip But it would increase a lot, transport lookout for a campaign. If the power supply by 220V transformer but the connection limits the possibilities ...
Ideal even, remote control (silent, fast, accurate, patella and the tripod the zoom ring One can dream!