I get 50-60 fps on Ultra @2160p with a Ryzen 2700x and a 2070 Super Mini Zotac GPU with 64 gigs of ram. I guess what your getting is normal for 1080p? I wouldn't know i only play on ultra at 2160p.
PS: Everyone posting their specs really doesn't help anyone if they don't know what Resolution your playing on. Its a big deciding factor. I dont care if your getting 200 fps on 1080p, it doesnt compare to 60 fps on 2160p. Fact.