Deus Ex: Mankind Divided, Doom, Hitman
Although Deus Ex: Mankind Divided supports DX12 and is AMD sponsored, it's not terribly demanding on the CPU and therefore the 7700K shouldn't be getting overwhelmed here and it isn't. In fact, the Vega 64 actually performs much better at 1080p with the Intel CPU.
Moving to 1440p, we are now mostly GPU-limited, though it's worth mentioning that at this more realistic resolution the R5 1600 and 7700K deliver the exact same experience.
Doom is another game that's extremely light on CPU usage, even more so than Deus Ex: Mankind Divided. As a result, the R5 1600 and 7700K both deliver the same experience once again and at 1080p run into the 200 fps frame cap.
For the most part, we've seen Ryzen dominating the low-level API testing, or at the very least delivering highly competitive numbers. This isn't true for Hitman though as here the 7700K is quite a bit faster, even at 1440p. The Vega 64 and GTX 1080 GPUs deliver much the same performance on Ryzen as we are heavily CPU-bound here.