DirectX 12 improved frame rates and 1% lows in 1080p in Shadow of the Tomb Raider benchmark. As a community request we check out the performance in 1440p - how things shape up as the GPUs are really stressed?
To get a clearer understanding, per scene frame rates are provided. It seems that the market place area of the third benchmark scene is where DX12 really shines and the R9 Nano really benefits from the low-level API there.
Shadow of the Tomb Raider results
Shadow of the Tomb Raider charts
Shadow of the Tomb Raider 95 %ILE