Hi, I also have RX480. Can you please test Xenoblade Chronicles X? Do you also have artifacting issue in main menu?Not sure about the R9, but I know that with my new RX480, CEMU stopped working from 1.6.1. I had the R9 280x before then, but I got the RX the same time as 1.6.1 came out so not sure if the R9 works with it or not. For now, use 1.6.0 and it should run.
Thanks.