Even if it was delivered at the polling rate, that should never be higher than 1kHz (otherwise you deserve whatever performance issues you get). A virtual funct

Even if it was delivered at the polling rate, that should never be higher than 1kHz (otherwise you deserve whatever performance issues you get). A virtual function call is 15ns conservatively, so say a signal is 150ns. 1000x is <150us of wasted time, well below observable overhead in any human-centric application.