Set the dynamic resolution flag when appropriate. It doesn't actually do anything, but it's good form to include it.

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/SuperResolution.cs

@@ -213,6 +213,7 @@ namespace UnityEngine.Rendering.PostProcessing
             if (context.camera.allowHDR) flags |= Fsr2.InitializationFlags.EnableHighDynamicRange;
             if (enableFP16) flags |= Fsr2.InitializationFlags.EnableFP16Usage;
             if (exposureSource == ExposureSource.Auto) flags |= Fsr2.InitializationFlags.EnableAutoExposure;
+            if (RuntimeUtilities.IsDynamicResolutionEnabled(context.camera)) flags |= Fsr2.InitializationFlags.EnableDynamicResolution;
 
             _callbacks = callbacksFactory(context);
             _fsrContext = Fsr2.CreateContext(_displaySize, _maxRenderSize, _callbacks, flags);