diff --git a/Resources/oscilloscope/empty.jpg b/Resources/oscilloscope/empty.jpg
index 7506914..51952db 100644
Binary files a/Resources/oscilloscope/empty.jpg and b/Resources/oscilloscope/empty.jpg differ
diff --git a/Resources/oscilloscope/noise.jpg b/Resources/oscilloscope/noise.jpg
index 8066386..7df423f 100644
Binary files a/Resources/oscilloscope/noise.jpg and b/Resources/oscilloscope/noise.jpg differ
diff --git a/Source/SosciPluginProcessor.cpp b/Source/SosciPluginProcessor.cpp
index 96efd98..8dfe33e 100644
--- a/Source/SosciPluginProcessor.cpp
+++ b/Source/SosciPluginProcessor.cpp
@@ -47,7 +47,7 @@ void SosciAudioProcessor::processBlock(juce::AudioBuffer<float>& buffer, juce::M
             point = { x, y, brightness };
         }
 
-        for (auto& effect : effects) {
+        for (auto& effect : permanentEffects) {
             point = effect->apply(sample, point);
         }
 
diff --git a/Source/visualiser/OutputFragmentShader.glsl b/Source/visualiser/OutputFragmentShader.glsl
index 48425da..6f6b914 100644
--- a/Source/visualiser/OutputFragmentShader.glsl
+++ b/Source/visualiser/OutputFragmentShader.glsl
@@ -9,7 +9,7 @@ uniform sampler2D uTexture5; //screen glow
 uniform float uExposure;
 uniform float uSaturation;
 uniform float uNoise;
-uniform float uTime;
+uniform float uRandom;
 uniform float uGlow;
 uniform float uAmbient;
 uniform float uFishEye;
@@ -26,8 +26,16 @@ vec3 desaturate(vec3 color, float factor) {
     return vec3(mix(color, gray, factor));
 }
 
-float noise(in vec2 uv, in float time) {
-    return (fract(sin(dot(uv, vec2(12.9898,78.233)*2.0 + time)) * 43758.5453)) - 0.5;
+float noise(vec2 texCoord, float time) {
+    // Combine texture coordinate and time to create a unique seed
+    float seed = dot(texCoord, vec2(12.9898, 78.233)) + time;
+    
+    // Use fract and sin to generate a pseudo-random value
+    return fract(sin(seed) * 43758.5453) - 0.5;
+}
+
+vec4 max4(vec4 a, vec4 b) {
+	return vec4(max(a.r, b.r), max(a.g, b.g), max(a.b, b.b), max(a.a, b.a));
 }
 
 void main() {
@@ -49,7 +57,7 @@ void main() {
     if (uRealScreen > 0.5) {
         vec4 reflection = texture2D(uTexture4, vTexCoord);
         vec4 screenGlow = texture2D(uTexture5, vTexCoord);
-        scatter += screenGlow * reflection * max(1.0 - uAmbient, 0.0);
+        scatter += max4(screenGlow * reflection * max(1.0 - uAmbient, 0.0), vec4(0.0));
     }
     
     float light = line.r + uGlow * 1.5 * screen.g * screen.g * tightGlow.r;
@@ -62,7 +70,10 @@ void main() {
         gl_FragColor.rgb += ambient * screen.rgb;
     }
     gl_FragColor.rgb = desaturate(gl_FragColor.rgb, 1.0 - uSaturation);
-    gl_FragColor.rgb += uNoise * noise(gl_FragCoord.xy, uTime);
+    float noiseR = noise(gl_FragCoord.xy * 0.01, uRandom * 100.0);
+    float noiseG = noise(gl_FragCoord.xy * 0.005, uRandom * 50.0);
+    float noiseB = noise(gl_FragCoord.xy * 0.07, uRandom * 80.0);
+    gl_FragColor.rgb += uNoise * vec3(noiseR, noiseG, noiseB);
     gl_FragColor.a = 1.0;
 }
 
diff --git a/Source/visualiser/VisualiserComponent.cpp b/Source/visualiser/VisualiserComponent.cpp
index c09c857..8d7c2b7 100644
--- a/Source/visualiser/VisualiserComponent.cpp
+++ b/Source/visualiser/VisualiserComponent.cpp
@@ -1005,18 +1005,6 @@ void VisualiserComponent::drawCRT() {
         setShader(glowShader.get());
         setOffsetAndScale(glowShader.get());
         drawTexture({blur3Texture});
-        
-        // blur the glow texture to blend it nicely. blur3Texture and blur1Texture are reserved, so we can't use them
-        // horizontal 512x512
-        activateTargetTexture(blur2Texture);
-        setShader(wideBlurShader.get());
-        wideBlurShader->setUniform("uOffset", 1.0f / 512.0f, 0.0f);
-        drawTexture({glowTexture});
-        
-        // vertical 512x512
-        activateTargetTexture(glowTexture);
-        wideBlurShader->setUniform("uOffset", 0.0f, 1.0f / 512.0f);
-        drawTexture({blur2Texture});
     }
 #endif
 
@@ -1025,7 +1013,7 @@ void VisualiserComponent::drawCRT() {
     outputShader->setUniform("uExposure", 0.25f);
     outputShader->setUniform("uSaturation", (float) settings.getSaturation());
     outputShader->setUniform("uNoise", (float) settings.getNoise());
-    outputShader->setUniform("uTime", time);
+    outputShader->setUniform("uRandom", juce::Random::getSystemRandom().nextFloat());
     outputShader->setUniform("uGlow", (float) settings.getGlow());
     outputShader->setUniform("uAmbient", (float) settings.getAmbient());
     setOffsetAndScale(outputShader.get());
@@ -1198,8 +1186,6 @@ void VisualiserComponent::paint(juce::Graphics& g) {
 }
 
 void VisualiserComponent::renderScope(const std::vector<float>& xPoints, const std::vector<float>& yPoints, const std::vector<float>& zPoints) {
-    time += 0.01f;
-    
     if (screenType != settings.getScreenType()) {
         screenType = settings.getScreenType();
 #if SOSCI_FEATURES
diff --git a/Source/visualiser/VisualiserComponent.h b/Source/visualiser/VisualiserComponent.h
index 6e3d89c..527b009 100644
--- a/Source/visualiser/VisualiserComponent.h
+++ b/Source/visualiser/VisualiserComponent.h
@@ -157,8 +157,6 @@ private:
     
     juce::OpenGLContext openGLContext;
     
-    float time = 0;
-    
     juce::Rectangle<int> buttonRow;
     juce::Rectangle<int> viewportArea;
     
diff --git a/sosci.jucer b/sosci.jucer
index e5ef2bf..7026a40 100644
--- a/sosci.jucer
+++ b/sosci.jucer
@@ -147,6 +147,10 @@
               file="Source/visualiser/BlurFragmentShader.glsl"/>
         <FILE id="Fimn0E" name="BlurVertexShader.glsl" compile="0" resource="0"
               file="Source/visualiser/BlurVertexShader.glsl"/>
+        <FILE id="ahlSbF" name="GlowFragmentShader.glsl" compile="0" resource="0"
+              file="Source/visualiser/GlowFragmentShader.glsl"/>
+        <FILE id="yKcFST" name="GlowVertexShader.glsl" compile="0" resource="0"
+              file="Source/visualiser/GlowVertexShader.glsl"/>
         <FILE id="R6Yr8V" name="LineFragmentShader.glsl" compile="0" resource="0"
               file="Source/visualiser/LineFragmentShader.glsl"/>
         <FILE id="aK7kZN" name="LineVertexShader.glsl" compile="0" resource="0"