In Aces High III, the DirectX 11 version is needed for Virtual Reality views. If you are having problems, like game freezes with the DirectX 11 version, and you do not use VR, you can use DirectX 9 version.

Understanding the difference between DX9 and DX11.

Direct3D 11 introduces a higher level of polymorphism on video memory resources, called views. Unlike in Direct3D 9, where a single object represented a texture, there are now two separate objects: the texture resource, containing the data, and the resource view, specifying how the view is utilized for rendering.

Increased DX mode places more demand on the system due to higher texture resolutions in games, impacting frame rates. Higher-end video cards and systems tend to handle DX11 games more effectively than mid to low-end alternatives.

Today’s more advanced systems require a more powerful DirectX API, leading to the development of DX11 and DX12 in order to handle advanced multimedia and games.

DX11 can strain older systems, leading to lower frame rates when gaming with mid to low level systems/video cards. Lowering the DX mode may improve performance, but it could also impact image quality.

If DX9 runs smoother, it suggests your system may struggle with the graphics in other modes, indicating low-end CPU and GPU. Stick with DX9 in this case.

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DirectX Diagnostic Tool (DxDiag)

DirectX Diagnostic is a tool used to test and troubleshoot video or sound hardware issues, saving scan results into text files for sharing in tech forums or support emails. It has been included with Windows since DirectX 6 and helps support personnel gain insight into potential hardware failures or incompatibility issues.

Note: Starting from Windows Vista, DirectX Diagnostic Tool only shows information; it is no longer possible to test the hardware and the various DirectX components.

Flushing DirectX Shader Cache On Windows 11, DirectX Shader is an optimization feature for storing pre-compiled versions of special instructions, known as shaders. Shaders are small programs understood by the graphics card that control various graphical effects. Compiling shaders can be time-consuming, and using a cache helps optimize performance by providing easier and faster access to pre-compiled versions. The decision to clear the cache will depend on you. However, below are some reasons why you may want to do so. To resolve performance issues – A cleared DirectX Shader cache may resolve some performance issues, including graphical glitches and stuttering. Freeing up disk space – Even though the cache may not take up much space, clearing it will still free up some extra space on your computer. To update the cache – If you have just updated your graphics card or installed new games, you may clear the DirectX Shader cache to fill it with new information. Note: clearing the cache is not something you must do often. It is mainly a troubleshooting step when you face some graphical issues. This procedure will not negatively affect your system. This is because the cache is isolated storage with no permanent information. You cannot disable or prevent the creation of the DirectX Shader Cache. Windows 11 has no official way of disabling this optimization feature. Ccleaner provides an option to flush the DirectX Shader Cache. To flush DirectX Shader Cache Using Disk Cleanup 1. Open Start Menu, type cleanup in the search bar, click Disk Cleanup to open it.. 2. Select your C drive, then click the OK button. 3. Tick the DirectX Shader cache option and click OK. Note: Though this is meant to flush DSC, it could be a good idea to check every listed item.

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