Galactic War Difficulty

I used to complete GW often with last node being sometime really difficult, or the last 3 nodes. I often manage with playing on my team composition and beat it. But now, since 2 weeks, the last node and now last 2 nodes is just team with GK with zeta Barris, and now Trawn 7stars gear11 team ... now when there is a team with GK it can take me 4-5 teams JUST to kill 1 character.. this is frustrating. Making it challenging is a thing, making it nearly impossible another