Merge pull request #907 from Unity-Technologies/Change-default-settings-for-planar-reflection

Update planar reflection settings

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/GlobalLightLoopSettings.cs

         public int pointCookieSize = 512;
         public int cubeCookieTexArraySize = 16;
 
-        public int reflectionProbeCacheSize = 128;
-        public int planarReflectionProbeCacheSize = 128;
+        public int reflectionProbeCacheSize = 4;
+        public int planarReflectionProbeCacheSize = 1024;
         public int reflectionCubemapSize = 128;
         public int planarReflectionTextureSize = 128;
         public bool reflectionCacheCompressed = false;