Schiessbecher input delay and firing with it mounted

Is it just me or does the Schiessbecher have an input delay when fired?
I don’t have the Dyakonov for the Soviets yet but I’m assuming it’s the same
Allowing the rifle to be used like normal while the device is mounted would be good this goes for Dyakonov too, only difference would be is your sight picture isn’t as clear