More accurate representation of where SystemInfo.computeSubGroupSize is available

Assets/Scripts/Core/Fsr2Pipeline.cs

@@ -113,7 +113,7 @@ namespace FidelityFX
             kernelIndex = shaderRef.FindKernel("CS");
 
             bool useLut = false;
-#if UNITY_2020_3_OR_NEWER
+#if UNITY_2022_1_OR_NEWER   // This will also work in 2020.3.43+ and 2021.3.14+ 
             if (SystemInfo.computeSubGroupSize == 64)
             {
                 useLut = true;