Initialize PSSR plugin once in class constructor and don't bother cleaning up, since we can reuse the same shared resources for the duration of the application's lifetime.

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

@@ -7,7 +7,9 @@ namespace UnityEngine.Rendering.PostProcessing
 	internal class PSSRUpscaler : Upscaler
 	{
 #if UNITY_PS5
-		public static bool IsSupported => UnityEngine.PS5.Utility.isTrinityMode;
+		public static bool IsSupported => UnityEngine.PS5.Utility.isTrinityMode && PluginInitialized;
+		
+		private static readonly bool PluginInitialized;
 
 		private PSSRPlugin.DispatchParams _dispatchParams;
 		private IntPtr _dispatchParamsBuffer;
@@ -18,22 +20,27 @@ namespace UnityEngine.Rendering.PostProcessing
 		private RenderTexture _outputColor;
 		private Texture2D _outputIntermediate;
 		
-		private bool _pluginInitialized;
 		private bool _contextInitialized;
 		private uint _frameCount;
-		
-		// TODO: InitPssr from class constructor
 
-		public override void CreateContext(PostProcessRenderContext context, Upscaling config)
+		static PSSRUpscaler()
 		{
 			if (PSSRPlugin.InitPssr() < 0)
 			{
 				Debug.LogError("Failed to initialize PSSR plugin!");
-				_pluginInitialized = false;
-				return;
+				PluginInitialized = false;
 			}
+			
+			PluginInitialized = true;
+		}	
 
-			_pluginInitialized = true;
+		public override void CreateContext(PostProcessRenderContext context, Upscaling config)
+		{
+			if (!PluginInitialized)
+			{
+				Debug.LogWarning("PSSR plugin is not initialized!");
+				return;
+			}
 
 			PSSRPlugin.InitParams initParams;
 			initParams.displayWidth = (uint)config.UpscaleSize.x;
@@ -88,18 +95,12 @@ namespace UnityEngine.Rendering.PostProcessing
 				Marshal.FreeHGlobal(_dispatchParamsBuffer);
 				_dispatchParamsBuffer = IntPtr.Zero;
 			}
-
-			if (_pluginInitialized)
-			{
-				PSSRPlugin.ReleasePssr();
-				_pluginInitialized = false;
-			}
 		}
 
 		public override void Render(PostProcessRenderContext context, Upscaling config)
 		{
 			var cmd = context.command;
-			if (!_pluginInitialized || !_contextInitialized)
+			if (!PluginInitialized || !_contextInitialized)
 			{
 				cmd.BlitFullscreenTriangle(context.source, context.destination);
 				return;