I just recently got a Sapphire Nitro RX480, and I'm very happy with it, however I'm getting absurdly bad FPS in Battlefield 4.
The 270X I just swapped out for the RX480 could run it in Ultra with MSAA disabled at 60fps with very few drops.
The RX480 can't even maintain 60 in Low settings. This problem was present with the 16.9.2 drivers as well, but I thought I'd wait for an update before complaining.
Nothing wrong with the card because it runs everything else great, and my system was previously able to run the game with an inferior card, so it must be drivers.
Pretty disappointing considering BF4 is fairly old now and is a flagship AMD title.