A post on Monster Hunter Status, the franchise’s official support account, reads “If you’re experiencing any initial issues with Monster Hunter Wilds on Steam, please try updating your graphics driver, turning off compatibility mode, and then readjust your settings.”
In the linked post on the Monster Hunter support website, Capcom has suggested several steps that could fix the issues, including updating drivers, adding the game’s folder and files to a player’s anti-virus exception list, and more.
“If you still experience issues, please also try the troubleshooting steps on the Official Monster Hunter Wilds Troubleshooting & Issue Reporting Thread posted on the Steam community page as they contain more detailed and additional steps that may help resolve your issue.”

Monster Hunter Wilds: Capcom responds to performance issues on PC | VGC
Capcom responds to serious performance issues on PC…
