Up front I want to say, I really like the game. Its one of my favorite shooters in a long while. I have been playing the game non stop for a few weeks now and have bought the battle pass and premium account and will most likely keep doing this for the forseable future.
That said, the only thing that kan make me alt f4 the game is the way players are able to use the forward spawn points. I really hate the spawn protection that they have on them when they spawn. Having a hard fought objective then a enemy building a spawn point right next to the point around a corner. They spawn on it and run over the open ground towards the objective and the invulnerablity stops when they crossed the deathzone and giving them the point without any fair counterplay.
Then when you repell the terminators. Your whole team reacts and tries to remove said spawn but gets mowed down by the invulnerable enemies that protect it. And even when you get that clutch grenade around the corner to destroy the point they will rebuild it with a random engineer because the player that put the spawn there is aware of all of this.