diff --git a/Outputs/CRT/Internals/CRTOpenGL.cpp b/Outputs/CRT/Internals/CRTOpenGL.cpp
index 01535b2d3..dd903b468 100644
--- a/Outputs/CRT/Internals/CRTOpenGL.cpp
+++ b/Outputs/CRT/Internals/CRTOpenGL.cpp
@@ -398,7 +398,7 @@ void OpenGLOutputBuilder::set_timing_uniforms()
 	if(composite_chrominance_filter_shader_program_)
 	{
 		composite_chrominance_filter_shader_program_->set_width_scalers(output_width, output_width);
-		composite_chrominance_filter_shader_program_->set_filter_coefficients(sample_cycles_per_line, colour_subcarrier_frequency * 0.5f);
+		composite_chrominance_filter_shader_program_->set_filter_coefficients(sample_cycles_per_line, colour_subcarrier_frequency);
 	}
 	if(rgb_filter_shader_program_)
 	{
diff --git a/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp b/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
index abc21433a..0c7086881 100644
--- a/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
+++ b/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
@@ -302,34 +302,35 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_luma_filter_shader(
 
 		"void main(void)"
 		"{"
-			"vec3 samples[] = vec3[]("
-				"texture(texID, inputPositionsVarying[0]).rgb,"
-				"texture(texID, inputPositionsVarying[1]).rgb,"
-				"texture(texID, inputPositionsVarying[2]).rgb,"
-				"texture(texID, inputPositionsVarying[3]).rgb,"
-				"texture(texID, inputPositionsVarying[4]).rgb,"
-				"texture(texID, inputPositionsVarying[5]).rgb,"
-				"texture(texID, inputPositionsVarying[6]).rgb,"
-				"texture(texID, inputPositionsVarying[7]).rgb,"
-				"texture(texID, inputPositionsVarying[8]).rgb,"
-				"texture(texID, inputPositionsVarying[9]).rgb,"
-				"texture(texID, inputPositionsVarying[10]).rgb"
-			");"
+//			"vec3 samples[] = vec3[]("
+//				"texture(texID, inputPositionsVarying[0]).rgb,"
+//				"texture(texID, inputPositionsVarying[1]).rgb,"
+//				"texture(texID, inputPositionsVarying[2]).rgb,"
+//				"texture(texID, inputPositionsVarying[3]).rgb,"
+//				"texture(texID, inputPositionsVarying[4]).rgb,"
+//				"texture(texID, inputPositionsVarying[5]).rgb,"
+//				"texture(texID, inputPositionsVarying[6]).rgb,"
+//				"texture(texID, inputPositionsVarying[7]).rgb,"
+//				"texture(texID, inputPositionsVarying[8]).rgb,"
+//				"texture(texID, inputPositionsVarying[9]).rgb,"
+//				"texture(texID, inputPositionsVarying[10]).rgb"
+//			");"
+//
+//			"vec4 luminance[] = vec4[]("
+//				"vec4(samples[0].r, samples[1].r, samples[2].r, samples[3].r),"
+//				"vec4(samples[4].r, samples[5].r, samples[6].r, samples[7].r),"
+//				"vec4(samples[8].r, samples[9].r, samples[10].r, 0.0)"
+//			");"
 
-			"vec4 luminance[] = vec4[]("
-				"vec4(samples[0].r, samples[1].r, samples[2].r, samples[3].r),"
-				"vec4(samples[4].r, samples[5].r, samples[6].r, samples[7].r),"
-				"vec4(samples[8].r, samples[9].r, samples[10].r, 0.0)"
-			");"
-
-			"fragColour = vec3("
-				"dot(vec3("
-					"dot(luminance[0], weights[0]),"
-					"dot(luminance[1], weights[1]),"
-					"dot(luminance[2], weights[2])"
-				"), vec3(1.0)),"
-				"samples[5].gb"
-			");"
+//			"fragColour = vec3("
+//				"dot(vec3("
+//					"dot(luminance[0], weights[0]),"
+//					"dot(luminance[1], weights[1]),"
+//					"dot(luminance[2], weights[2])"
+//				"), vec3(1.0)),"
+//				"samples[5].gb"
+//			");"
+			"fragColour = texture(texID, inputPositionsVarying[5]).rgb;"//lumaChromaToRGB * lumaChromaColourInRange;"
 		"}", false, false);
 }