To download and install D3D feature level 11.1, follow these steps:
This article explains how to verify your current feature level and how to "download" the necessary updates to enable it on your system. What is D3D Feature Level 11.1? d3d feature level 11.1 download
Direct3D 11.1 Features. The following functionality has been added in Direct3D 11.1, which is included with Windows 8, Windows RT, Direct3D 11.1 Features - Win32 apps - Microsoft Learn To download and install D3D feature level 11
Enhanced support for multithreading helps in leveraging modern CPU architectures more effectively, improving application performance. which is included with Windows 8