RDShade offers P3D users the ability to tweak and change their shaders and effects that directly impact the way the sim looks and feels on the fly, even with P3D running. Users are able to download custom and pre-built shader presets that can be loaded in through the UI and each preset can be used as a starting point where full customizability can be accessed through the customization tab to add additional tweaks and personal touches to your sim.
Customizations include the ability to change lighting, clouds (both volumetric and 2D), sky, environment and even change HDR and PBR effects within the sim. RDShade also provides an insight into how the changes you make, both positive and negative, impact performance with a performance impact display that updates as you make changes.
For a more in-depth look into RDShade and its capabilities, you can download the RDShade manual from the RDPresets website. You can also purchase RDShade for P3D V4/5 directly from the team at RDPresets for €19.99 which is around £16.66/$22.00USD.