Enable Spatial-Temporal Post-processing in URP

To enable STP in the Universal Render Pipeline (URP):

Select the active URP asset in the Project window.
In the Inspector, go to Quality > Upscaling Filter, and select Spatial-Temporal Post-Processing.

STP remains active when Render Scale is set to 1.0 as it applies temporal anti-aliasing (TAA) to the final rendered output.

Note: STP is not compatible with Dynamic Resolution in URP, only with Render Scale.

Introduction to Spatial-Temporal Post-processing in URP

Spatial-Temporal Post-processing Rendering Debugger reference for URP

Unity Manual