Expect HDMI 2.2 introduced new Ultra96 certified cables while DisplayPort 2.1b brings DP80LL active cables offering 80 Gbps throughput over lengths of up to three meters ...
allowing it to support the full 240Hz at 4K resolution. It also brings two HDMI 2.1 (UHD@240Hz) and Type-C (DP alt.) with 98W PD. Thanks to Nvidia G-Sync support, screen tearing is kept to a minimum, ...
4K 120Hz support, VRR, and ALLM and the latest DisplayPort 2.1a offers 80Gbps bandwidth for gaming and professional displays. Its advanced cable supports future hardware with no loss in performance".
Another issue is that compatible cables are difficult to find, and most are too short for some setups. Even without DisplayPort 2.1a hardware, the MSI MPG 322URX is an impressive 4K display.