: In your game installation folder ( MGS_TPP ), locate the file named winmm.dll . Rename it to dinput.dll . This has been reported to resolve launch failures after upgrading to Windows 11.
High-refresh-rate monitors and modern multi-core processors on Windows 11 require custom adjustments to maintain a smooth frame rate. Disable Threaded Optimization (NVIDIA Users) Right-click your desktop and open the . Go to Manage 3D Settings > Program Settings . Add mgsvtpp.exe to the list. Locate Threaded Optimization and turn it Off . Metal Gear Solid V The Phantom Pain Fix For Windows 11