Griefing/Game Creation Blocking

Hey so lately a lot of players seem to think they are entitled to have a spot in the "Bh/Bh-" runs i know there's a rule about Looting in rush games but this is getting out of hand people can't do more than 10-20 runs without being forcefully stopped or griefed by others is there anything we can do to stop them aside from create private games i know thats always the first option but the servers aren't doing so well lately many players have been speaking about lag so i don't like doing private as it requires me to open 4-5 screens for optimal exp gain and most times i get "your connection has been interrupted" anyways so best option now is to rely on others to open throne tp so i can atleast Bo and Help with clearing the waves