I've tested this map and its very beatiful e very good to play.
The performance in pvp is ok, I didn't see great problems but in local play the performance is very unstable. I get from 90fps to 35fps!(Rx480 8Gb) It seem that sometimes the game is loading or doing something in the background which causes a performance impact.
I notice a bit of this problem in other maps on local play too. When I capture a point, the game start to load more enemies and for some seconds the fps decreases. This is still a slight problem in Refinery but now its heavy noticeable on Ministry.