An average FPS of 118.92 will be a very playable game session. Bioshock Infinite does not appear to have very significant graphics requirements as all the cards tested received good average FPS.
In Eyefinity mode running 5760×1080, the performance of the Sapphire Vapor-X R9 290 drops from 118.92FPS to 53.11FPS, which is a significant drop in performance but is still very playable.
Benchmark Results: Bioshock Infinity is very playable at 1080p, receiving 118.92FPS, that is dramatically dropped at 5760×1080 down to 53.11. While the drop in performance is significant, 53.11FPS is still very playable.