One of the most common issues in 5.1.0 is the "reversed" depth buffer, which makes effects like blur (MXAO/DOF) look broken.
by NeptuneWhims: Great for warmer, more atmospheric lighting. Reshade 5.1.0 (for TS4)
If your game performance drops, try disabling Ambient Light or Bloom effects in the ReShade menu; these are often the heaviest on your system. One of the most common issues in 5
Open the ReShade 5.1.0 setup. If you already have an older version, select "Modify" . Select the API: For The Sims 4, you must select DirectX 9 . Open the ReShade 5
Many older presets require shaders not included in newer versions. Download the Legacy Pack and drag the contents of its "Shaders" and "Textures" folders into the corresponding folders inside your Bin/reshade-shaders directory. 2. Essential Fixes for Version 5.1.0
To get working perfectly with The Sims 4 , follow this guide on installation and critical troubleshooting for that specific version. 1. Core Installation Steps