Ray tracing performance is very good at DXR Ultra on either RTX 2070 SUPER, RTX 2080 and RTX 2080 Ti.
Look at Shadow of the Tomb Raider 4K DXR Ultra for example around 30 fps on both RTX 2070 SUPER and RTX 2080 and 39 fps on 2080 Ti. If you think that ray tracing performance not acceptable. Then take a look at some 2019 non ray tracing games at 4K that struggled at 4K sub 30 fps.
https://www.pcgameshardware.de/Rade...ase-Benchmark-Preis-Kaufen-Vega-64-1293229/3/
So ray tracing at 4K 30 fps is not that bad.
Very embarrassed to see Radeon VII struggled at 4K 30 fps in these games and would not do 4K 60 fps with useless 16GB VRAM.