Consistent Lag when entering Arenas

I don't know if this is affecting anyone else for the most part i have just dealt with it and persevered with the extra difficulty , but now it's just a joke trying to defeat the guardians for the first time...its complete bullshit i have a character capable of beating them , yet i am dying because the game cannot keep up....and on top of that maps aren't exactly cheap and the xp loss compared to grinding maps ratio is unjust if i am dying because of the reasons stated...please fix your game it's a great game but get it to a playable state.