Civilization VI: Gathering Storm
Some would call it the ultimate turn-based strategy game, and who are we to argue? Civilization VI is an excellent way to lose a few hours, and with more expansive empires than ever before, a capable PC is needed to experience the game at its very best.
Two things stand out here. The lacklustre performance of Radeon RX 6000 Series when run on a Ryzen 9 3950X - you will see that it is much faster on an R9 5950X (page 14) - and the rather large jump over RX 6800 XT at UHD. A game update is the most likely reason why.