That's very familiar to me. When flying similar planes it's almost impossible to follow the leader, even worse if there's a bigger formation to follow.
I guess Drano has a point about net lag. Especially voice seems to suffer from that. When the leader tells that he's turning he'll already subconsciously is preparing for the turn which gives him some advantage. Then it takes the second for his sentence to take a round trip to Texas and back until you hear it. And then it takes another second for you to react. And then you try to compensate which eats even more out of your speed.
To speed up your conversation try Discord as their servers are closer to you. If using AH Voice, the leader should pull the throttle back for formation flying to compensate the lag in conversation.