diff --git a/packages/math/include/math/MathTween.h b/packages/math/include/math/MathTween.h
index 1f6fca37..381e5da8 100644
--- a/packages/math/include/math/MathTween.h
+++ b/packages/math/include/math/MathTween.h
@@ -45,7 +45,6 @@ namespace l::math::tween {
         float Value();
 
     protected:
-        float mUpdateRate = 0.0f;
         int32_t mUpdateCount = 1;
         float mDynamicSmoothAccuracy = 0.1f;
         float mDynamicSmooth = 0.25f;
diff --git a/packages/math/source/common/MathTween.cpp b/packages/math/source/common/MathTween.cpp
index d13c658c..626e341b 100644
--- a/packages/math/source/common/MathTween.cpp
+++ b/packages/math/source/common/MathTween.cpp
@@ -73,14 +73,11 @@ namespace l::math::tween {
 	// update rate in audio processing, the number of samples between calls
 	// we can use this to update expensive interpolation here
 	void DynamicTween::Update(float updateRate) {
-		if (updateRate != mUpdateRate) {
-			mUpdateRate = l::math::functions::max(updateRate, 2.0f);
-			mDynamicSmooth = GetRWAFactor(static_cast<int32_t>(mUpdateRate), mDynamicSmoothAccuracy);
-		}
+		mDynamicSmooth = GetRWAFactor(static_cast<int32_t>(updateRate), mDynamicSmoothAccuracy);
 
 		mTarget = mTargetValue;
 		if (mCounter < mUpdateCount) {
-			float t = (mCounter + 0.5f * mUpdateRate) / static_cast<float>(mUpdateCount - 0.5f * mUpdateRate);
+			float t = (mCounter + 0.5f) / static_cast<float>(mUpdateCount - 0.5f);
 			t = l::math::functions::clamp(t, 0.0f, 1.0f);
 			mTarget = mTargetValuePrev + l::math::smooth::smoothPolyh3(t) * (mTargetValue - mTargetValuePrev);
 		}
@@ -95,4 +92,5 @@ namespace l::math::tween {
 	float DynamicTween::Value() {
 		return mValue;
 	}
+
 }
diff --git a/packages/math/tests/common/MathTweenTest.cpp b/packages/math/tests/common/MathTweenTest.cpp
index d42ec505..2286281b 100644
--- a/packages/math/tests/common/MathTweenTest.cpp
+++ b/packages/math/tests/common/MathTweenTest.cpp
@@ -38,7 +38,7 @@ TEST(MathTween, DynamicTween) {
 }
 
 TEST(MathTween, DynamicTweenVeryShortBatch) {
-	DynamicTween tween(0.1f);
+	DynamicTween tween(0.01f);
 	tween.SetValue(1.0f);
 	tween.SetTarget(0.0, 22);
 	TEST_FUZZY(tween.Value(), 1.0f, 0.01f, "");
@@ -55,7 +55,7 @@ TEST(MathTween, DynamicTweenVeryShortBatch) {
 }
 
 TEST(MathTween, DynamicTweenShortBatch) {
-	DynamicTween tween(0.35f);
+	DynamicTween tween(0.135f);
 	tween.SetValue(1.0f);
 	tween.SetTarget(0.0, 102);
 	TEST_FUZZY(tween.Value(), 1.0f, 0.01f, "");
@@ -72,7 +72,7 @@ TEST(MathTween, DynamicTweenShortBatch) {
 }
 
 TEST(MathTween, DynamicTweenLongBatch) {
-	int32_t updateRate = 100;
+	float updateRate = 100.0f;
 	DynamicTween tween(0.35f);
 	tween.SetValue(1.0f);
 	tween.SetTarget(0.0, 1020);
@@ -84,7 +84,7 @@ TEST(MathTween, DynamicTweenLongBatch) {
 		auto value = tween.Next();
 		LOG(LogInfo) << "Tween (" << i << "): " << value;
 	}
-	TEST_FUZZY(tween.Value(), 0.0f, 0.01f, "");
+	TEST_FUZZY(tween.Value(), 0.0f, 0.02f, "");
 
 	return 0;
 }
diff --git a/packages/nodegraph/include/nodegraph/operations/NodeGraphOpFilter.h b/packages/nodegraph/include/nodegraph/operations/NodeGraphOpFilter.h
index db6c5db1..82bff617 100644
--- a/packages/nodegraph/include/nodegraph/operations/NodeGraphOpFilter.h
+++ b/packages/nodegraph/include/nodegraph/operations/NodeGraphOpFilter.h
@@ -102,7 +102,7 @@ namespace l::nodegraph {
         GraphFilterChamberlain2pole(NodeGraphBase* node) :
             GraphFilterBase(node, "Chamberlin two-pole")
         {
-            AddInput("Mode");
+            mNodeInputManager.AddInput(InputTypeBase::SAMPLED, AddInput("Mode"));
             mState.resize(4);
         }
         virtual ~GraphFilterChamberlain2pole() = default;
diff --git a/packages/nodegraph/source/common/operations/NodeGraphOpFilter.cpp b/packages/nodegraph/source/common/operations/NodeGraphOpFilter.cpp
index a900be4f..e2d00d73 100644
--- a/packages/nodegraph/source/common/operations/NodeGraphOpFilter.cpp
+++ b/packages/nodegraph/source/common/operations/NodeGraphOpFilter.cpp
@@ -112,8 +112,9 @@ namespace l::nodegraph {
     float GraphFilterChamberlain2pole::ProcessSignal(float input, float cutoff, float resonance) {
         float inputValueInbetween = (mInputValuePrev + input) * 0.5f;
         float scale = mScaleFilter.Next();
+        resonance *= 0.99f * (cutoff * 0.15f + 0.85f); // adjust resonance slightly down at low frequencies to avoid oscillation
         cutoff *= 0.5f;
-        resonance = 1.0f - resonance;
+        resonance = (1.0f - resonance);
         for (int32_t oversample = 0; oversample < 2; oversample++) {
             mState.at(0) = mState.at(0) + cutoff * mState.at(2);
             mState.at(1) = scale * (oversample == 0 ? inputValueInbetween : input) - mState.at(0) - resonance * mState.at(2);
diff --git a/packages/nodegraph/tests/common/NodeGraphBatchingTest.cpp b/packages/nodegraph/tests/common/NodeGraphBatchingTest.cpp
index b676245d..f29c9e97 100644
--- a/packages/nodegraph/tests/common/NodeGraphBatchingTest.cpp
+++ b/packages/nodegraph/tests/common/NodeGraphBatchingTest.cpp
@@ -36,7 +36,7 @@ TEST(NodeGraphBatching, Simple) {
 
 	auto output = &group.GetOutput(0, 8);
 	
-	TEST_FUZZY(0.034771f, output[7], 0.0001f, "");
+	TEST_FUZZY(0.012347f, output[7], 0.0001f, "");
 
 	return 0;
 }
diff --git a/packages/nodegraph/tests/common/NodeGraphSchemaTest.cpp b/packages/nodegraph/tests/common/NodeGraphSchemaTest.cpp
index 0ce45b9d..d1829b4d 100644
--- a/packages/nodegraph/tests/common/NodeGraphSchemaTest.cpp
+++ b/packages/nodegraph/tests/common/NodeGraphSchemaTest.cpp
@@ -109,7 +109,7 @@ TEST(NodeGraph, FilterLowpass) {
 		//LOG(LogInfo) << nodeLowpass.GetOutput(0);
 	}
 
-	TEST_FUZZY(nodeLowpass.GetOutput(0), -0.201134, 0.0001f, "");
+	TEST_FUZZY(nodeLowpass.GetOutput(0), -0.287209, 0.0001f, "");
 
 	return 0;
 }
@@ -173,8 +173,8 @@ TEST(NodeGraph, GraphGroups) {
 	float output1 = group2.GetOutput(0);
 	float output2 = group2.GetOutput(1);
 
-	TEST_FUZZY(output1, 0.149999559f, 0.00001, "");
-	TEST_FUZZY(output2, 0.0999997109f, 0.00001, "");
+	TEST_FUZZY(output1, 0.130579203f, 0.00001, "");
+	TEST_FUZZY(output2, 0.0870528072f, 0.00001, "");
 
 	return 0;
 }