What I’ve watched now for a quite long time is medics having massive problems to revive their team mates. It happens very often that the defi fails to connect with the dead body and this applies to more skilled/experienced players as well as to beginners.
Always when I was lying on the ground crying for a medic, seeing him finally arriving but then getting shot down shortly before because he failed to revive, made me really mad. Until I played medic myself and also failed to revive sometimes. 
There is something wrong with the defi action, I’m just not sure what exactly it is. 
