Fixed jitter being weirdly inverted, though in Isonzo the opposite is required. Strange.

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/FSR3NativeUpscaler.cs

@@ -78,8 +78,8 @@ namespace UnityEngine.Rendering.PostProcessing
             var scaledRenderSize = config.GetScaledRenderSize(context.camera);
             
             ref var execData = ref _nativeContext.executeData;
-            execData.jitterOffsetX = config.JitterOffset.x;
-            execData.jitterOffsetY = config.JitterOffset.y;
+            execData.jitterOffsetX = -config.JitterOffset.x;
+            execData.jitterOffsetY = -config.JitterOffset.y;
             execData.MVScaleX = -(float)scaledRenderSize.x;
             execData.MVScaleY = -(float)scaledRenderSize.y;
             execData.renderSizeWidth = (uint)scaledRenderSize.x;