An AMD Ryzen 5 3600 was shown to beat the Intel Core i7-8700 in a leaked PUBG benchmark over at the Chiphell forum. The Ryzen 5 3600 was shown to average about 6.3% higher than the 8700 when both of them were paired with DDR4-3000 RAM and a GeForce RTX 2080 Ti. The larger cache size on Ryzen could work well for gamers, but further data and testing are needed for an absolute conclusion.
https://www.notebookcheck.net/AMD-Ryzen-5-3600-shown-to-post-6-3-higher-FPS-than-an-Intel-Core-i7-8700-in-PUBG.422774.0.html