The CPU is gonna be fine. I had a Intel Q6600 that could run RenX fine. The Ryzen 3 2200U should be better then the Q6600 according to the benchmarks . So if the Q6600 can run it, the 2200U should be more then capable.
If I look on another site for GPU benchmarks, I can see the Vega 3 is quite capable but not a powerhouse (What did you expect from an iGPU). It's a nice GPU for some lightweight gaming and the usual office and web stuff. The more interesting thing is the benchmark for Bioshock infinte. As Bioshock infinite is an UE3 game, we can compare it to RenX which is based on the UDK that is UE3. I think Bioshock infinite needs more power than RenX does, but these are the FPS for it (I don't know why it is in German, but you'll get it I assume ):
So on lower resolutions on medium, you should get decent fps on Bioshock. I think RenX would be less demanding, but that is just a hunch.
Not bad for an iGPU, but it aint a Nvidia Titan I think you can make a desicion based on this info. One thing I would advise you to get, if you are building your own pc, is fast RAM. Ryzen loves fast ram, combined with an iGPU even more.
Hope this helps.
-Schmitz out