REFramework And DirectStorage Supposedly Provide A 30fps Boost The big ones are REFramework and DirectStorage. REFramework "disables the anti-tamper, which will significantly reduce in-game freezes".

Install REFramework by simply extracting the "dinput8.dll" file from the zip download to your game's install folder (\steamapps\common\MonsterHunterWilds). Run Monster Hunter Wilds once.