For RavenAmbrie

OS Name Microsoft Windows 10 Pro
Version 10.0.19042 Build 19042
BaseBoard Product ROG CROSSHAIR VIII HERO (WI-FI)
BIOS Version/Date American Megatrends Inc. 3401, 3/19/2021
Processor AMD Ryzen 9 5900X 12-Core Processor, 3701 Mhz, 12 Core(s), 24 Logical Processor(s)
Installed Physical Memory (RAM) 64.0 GB G.SKILL TRIDENT NEO 3600 CL 16-19-19-19
GPU AMD Radeon RX 6900 XT POWERCOLOR RED DEVIL
currently back to (Adrenaline 21.2.3 RELEASED 2/17/2021)

Pretty much the same spec as you, i had the same issue when i went from (21.2.3 RELEASED 2/17/2021) to (21.3.1 RELEASED 3/24/2021) and (21.3.2 RELEASED 3/26/2021) utilization is broken and the fps is horrible lol. went back to 21.2.3 3440x1440 max settings can run 165 on my 165hz monitor just want to say your not alone definitely not suggesting to revert =D that is up to you just want to share if you want a working driver for the meantime it's (21.2.3 works well no issues) crazy thing is only FFXIV was having that issue all my other 40+ games installed was working normally.