Using a "blue noise" texture instead of the crappy value/white noise, which is somewhat less noticeable (thanks to reddit user ahcookies for the recommendation, and Cristoph Peters for the texture).

Also decided to limit the sample count to 128, as there really wasn't a visual difference compared to 64.

Author: TheMasonX

Assets/PCSS/Demo/Demo Assets/Palm Trees/Materials/Palm.mat

@@ -0,0 +1,102 @@
+Shader "Custom/Vegetation"
+{
+	Properties
+	{
+        _MainTex ("Base Color", 2D) = "white" {}
+		[Normal] [NoScaleOffset]
+		_NormalMap ("Normal Map", 2D) = "bump" {}
+        _Metallic ("Metallic", Range(0, 1)) = 0
+        _Gloss ("Gloss", Range(0, 1)) = 0.1336244
+		
+		[Space(10)] [NoScaleOffset]
+		_WindNoise ("Wind Noise", 2D) = "gray" {}
+		_WindNoiseScale ("Wind Noise Position Scale", Float ) = .1
+		_WindNoiseSpeed ("Wind Noise Speed", Float ) = .1
+		_WindNoiseStrength ("Wind Noise Strength", Range(0,10)) = .3
+
+		[Space(10)] 
+		_Wind_Direction ("Wind_Direction", Vector) = (1,0,1,0)
+        _WindFrequency ("Wind Frequency", Float ) = 1.5
+        _WindAmplitude ("Wind Amplitude", Float ) = 0.03
+        _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
+	}
+	SubShader
+	{
+		Tags { "RenderType" = "TreeTransparentCutout" }
+		LOD 200
+
+		CGPROGRAM
+		#pragma surface surf Standard vertex:vert alphatest:_Cutoff addshadow fullforwardshadows
+
+		#pragma target 3.0
+
+		sampler2D _MainTex; uniform float4 _MainTex_ST;
+		sampler2D _NormalMap;
+		sampler2D _WindNoise;
+
+		struct appdata
+		{
+			float4 vertex : POSITION;
+			float3 normal : NORMAL;
+			float4 tangent : TANGENT;
+			float4 color : COLOR;
+			float2 uv : TEXCOORD0;
+			float2 texcoord1 : TEXCOORD1;
+			float2 texcoord2 : TEXCOORD2;
+			UNITY_VERTEX_INPUT_INSTANCE_ID
+		};
+
+		struct Input
+		{
+			float4 pos : SV_POSITION;
+			float2 texcoord : TEXCOORD0;
+
+			UNITY_VERTEX_INPUT_INSTANCE_ID
+			UNITY_VERTEX_OUTPUT_STEREO
+		};
+
+		fixed4 _Wind_Direction;
+		half _Metallic;
+		half _Gloss;
+		float _WindNoiseScale;
+		float _WindNoiseSpeed;
+		float _WindNoiseStrength;
+
+		float _WindFrequency;
+		float _WindAmplitude;
+
+		// #pragma instancing_options assumeuniformscaling
+		UNITY_INSTANCING_CBUFFER_START(Props)
+			// put more per-instance properties here
+		UNITY_INSTANCING_CBUFFER_END
+
+		void vert(inout appdata v, out Input o)
+		{
+			UNITY_INITIALIZE_OUTPUT(Input, o);
+			UNITY_SETUP_INSTANCE_ID(v);
+			UNITY_TRANSFER_INSTANCE_ID(v, o);
+			UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+
+			o.texcoord = TRANSFORM_TEX(v.uv, _MainTex);
+
+			float3 pos = mul(v.vertex, unity_ObjectToWorld);
+			float noiseA = tex2Dlod(_WindNoise, float4(pos.xz * _WindNoiseScale + _Time.x * float2(_WindNoiseSpeed, _WindNoiseSpeed), 0.0, 0.0)).r * _WindNoiseStrength;
+			 
+			v.vertex.xyz += (mul(_Wind_Direction.xyz, unity_WorldToObject) * v.color.r * sin(v.color.b*3.141592654 + (_Time.y + noiseA) *_WindFrequency) *_WindAmplitude);
+			o.pos = UnityObjectToClipPos(v.vertex);
+		}
+
+		void surf(Input IN, inout SurfaceOutputStandard o)
+		{
+			fixed4 c = tex2D(_MainTex, IN.texcoord);
+			o.Albedo = c.rgb;
+
+			o.Normal = UnpackNormal(tex2D(_NormalMap, IN.texcoord));
+			o.Metallic = _Metallic;
+			o.Smoothness = _Gloss;
+			o.Alpha = c.a;
+		}
+		ENDCG
+	}
+	FallBack "Diffuse"
+}