He cant just ban people who play 4-5 players because as you figured.. it HAPPENS EVERY SINGLE DAY, that's how tibia is.. people play together and they don't fking care if it's war or rpg, they just want to login and play together as they SHOULD.
The reason, QUARLEY aka GM Knoxx started banning teams is because he keeps dying all the time and he doesn't like to die so he bans people he doesn't like and people who are better than him, those players kill him over and over and over again until he finally gets so mad that his only solution is to ban them.
When there are 40 people on the ot there's just NO, FREAKING, WAY, that people will play 2 - 2 - 2 - 2 for the following reasons:
1.It's literally impossible to play 2v2v2v2 because people that are bleeding or people that are hated will just be focused no matter how you look at it, if I hate a specific player and other players attack him I will join them and help them kill that guy.
2.There are many teams that came together and they just want to have fun on TeamSpeak and practice their PVP as a team for RPG (That's what war servers are for, hello?)
3.There are bad players who can't do anything by themselves (like Quarley for example) who will just plainly die solo or in a duo and they need more players to play with and to learn from.. that's why they are asking to team up and it's very understandable.
4.This is Tibia, it should be played however it's supposed to be played without any GM rules like "You cant play with this player, or you cant be with more than 3 people, or you can only go war mode if u want to play 3v3 or you cant go sewers or some other fking bullshit that those gms come up with every day"
I am literally shocked by Gm Knoxxs behavior, P.S just for the record (He banned only the players that killed him, not any other 5-6 teams, and he's done that after he was in a team with 3-4 himself, WIth Boxing, Turtle, Maly, and Lasp (Strazak Sam), so hypocrite much?
The GM is allowed to play in a team but not the players who kill him? I think they need to get their shit together and rethink their life decisions and future otherwise they're going to have a tough life.
Good luck.