My test device is only midrange but many have stated the performance overall is not great. The game is clearly built with Unreal Engine and trust m you can tell. It just has the feel and I mean that in the best way. I was honestly blown away. The movement, animations and even gun feel are stellar. This is far behind what I would expect from a mobile game. Honestly it almost felt like free roam "Time Crisis" with Zombies. That is the level of arcade polish mixed with realistic weapon feel. It's just good. I'm crazy excited for what this game holds and while the frame drops make it hard to play for long as of now I think they can work past that with some optimization. This could easily be one of the best mobile games I have ever played.