diff --git a/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm b/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm
index fd6afff8b..de8eb60be 100644
--- a/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm	
+++ b/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm	
@@ -544,6 +544,11 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
 		const float minimumSize = 4.0f * float(modals.colour_cycle_numerator) / float(modals.colour_cycle_denominator);
 		while(uniforms()->cyclesMultiplier * modals.cycles_per_line < minimumSize) {
 			uniforms()->cyclesMultiplier += 1.0f;
+
+			if(uniforms()->cyclesMultiplier * modals.cycles_per_line > 2048) {
+				uniforms()->cyclesMultiplier -= 1.0f;
+				break;
+			}
 		}
 
 		// Create the composition render pass.
@@ -567,10 +572,10 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
 		// Generate the chrominance filter.
 		{
 			auto *const chromaCoefficients = uniforms()->chromaCoefficients;
-			SignalProcessing::FIRFilter chrominancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine * 0.25f);	//  * (isSVideoOutput ? 1.0f : 0.25f)
+			SignalProcessing::FIRFilter chrominancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine * 0.01f);
 			const auto calculatedChromaCoefficients = chrominancefilter.get_coefficients();
 			for(size_t c = 0; c < 8; ++c) {
-				chromaCoefficients[c].y = chromaCoefficients[c].z = calculatedChromaCoefficients[c] * (isSVideoOutput ? 4.0f : 4.0f);
+				chromaCoefficients[c].y = chromaCoefficients[c].z = calculatedChromaCoefficients[c] * (isSVideoOutput ? 4.0f : 2.0f);
 				chromaCoefficients[c].x = 0.0f;
 			}
 			chromaCoefficients[7].x = 1.0f;
@@ -578,7 +583,7 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
 			// Luminance is under-filtered during the separation phase in order not to subtract too much from chrominance;
 			// therefore an additional filtering is applied here.
 			if(!isSVideoOutput) {
-				SignalProcessing::FIRFilter luminancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine);
+				SignalProcessing::FIRFilter luminancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine * 0.8f);
 				const auto calculatedLumaCoefficients = luminancefilter.get_coefficients();
 				for(size_t c = 0; c < 8; ++c) {
 					chromaCoefficients[c].x = calculatedLumaCoefficients[c];
@@ -589,7 +594,7 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
 		// Generate the luminance separation filter.
 		{
 			auto *const luminanceCoefficients = uniforms()->lumaCoefficients;
-			SignalProcessing::FIRFilter luminancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine * 1.25f);
+			SignalProcessing::FIRFilter luminancefilter(15, float(_lineBufferPixelsPerLine), 0.0f, colourCyclesPerLine);
 			const auto calculatedCoefficients = luminancefilter.get_coefficients();
 			memcpy(luminanceCoefficients, calculatedCoefficients.data(), sizeof(float)*8);
 		}