diff --git a/Plugins/ZShell/Blobs/blobrect.cpp b/Plugins/ZShell/Blobs/blobrect.cpp
index dc03432..ea027a9 100644
--- a/Plugins/ZShell/Blobs/blobrect.cpp
+++ b/Plugins/ZShell/Blobs/blobrect.cpp
@@ -158,11 +158,12 @@ void BlobRect::setBottomRightRadius(qreal r) {
 }
 
 void BlobRect::cornerRadii(float out[4]) const {
-	const auto base = static_cast<float>(m_radius);
-	out[0] = m_topRightRadius >= 0 ? static_cast<float>(m_topRightRadius) : base;
-	out[1] = m_bottomRightRadius >= 0 ? static_cast<float>(m_bottomRightRadius) : base;
-	out[2] = m_bottomLeftRadius >= 0 ? static_cast<float>(m_bottomLeftRadius) : base;
-	out[3] = m_topLeftRadius >= 0 ? static_cast<float>(m_topLeftRadius) : base;
+	const auto maxR = static_cast<float>(std::min(width(), height())) * 0.5f;
+	const auto base = std::min(static_cast<float>(m_radius), maxR);
+	out[0] = std::min(m_topRightRadius >= 0 ? static_cast<float>(m_topRightRadius) : base, maxR);
+	out[1] = std::min(m_bottomRightRadius >= 0 ? static_cast<float>(m_bottomRightRadius) : base, maxR);
+	out[2] = std::min(m_bottomLeftRadius >= 0 ? static_cast<float>(m_bottomLeftRadius) : base, maxR);
+	out[3] = std::min(m_topLeftRadius >= 0 ? static_cast<float>(m_topLeftRadius) : base, maxR);
 }
 
 bool BlobRect::isExcluded(const BlobShape* other) const {
diff --git a/Plugins/ZShell/Blobs/blobshape.cpp b/Plugins/ZShell/Blobs/blobshape.cpp
index d284a5e..ce05808 100644
--- a/Plugins/ZShell/Blobs/blobshape.cpp
+++ b/Plugins/ZShell/Blobs/blobshape.cpp
@@ -72,15 +72,11 @@ void BlobShape::geometryChange(const QRectF& newGeometry, const QRectF& oldGeome
 		// Accumulate sub-pixel drift so slow movements don't desync the shader
 		m_pendingDx += static_cast<float>(newGeometry.x() - oldGeometry.x());
 		m_pendingDy += static_cast<float>(newGeometry.y() - oldGeometry.y());
-		m_pendingDw += static_cast<float>(newGeometry.width() - oldGeometry.width());
-		m_pendingDh += static_cast<float>(newGeometry.height() - oldGeometry.height());
-		
-		if (std::abs(m_pendingDx) > 0.5f || std::abs(m_pendingDy) > 0.5f || 
-		    std::abs(m_pendingDw) > 0.5f || std::abs(m_pendingDh) > 0.5f) {
+		const auto dw = std::abs(newGeometry.width() - oldGeometry.width());
+		const auto dh = std::abs(newGeometry.height() - oldGeometry.height());
+		if (std::abs(m_pendingDx) > 0.5f || std::abs(m_pendingDy) > 0.5f || dw > 0.5 || dh > 0.5) {
 			m_pendingDx = 0;
 			m_pendingDy = 0;
-			m_pendingDw = 0;
-			m_pendingDh = 0;
 			m_group->markShapeDirty(this);
 		}
 	}
@@ -100,7 +96,8 @@ void BlobShape::updateCenteredDeformMatrix() {
 }
 
 void BlobShape::cornerRadii(float out[4]) const {
-	const auto r = static_cast<float>(m_radius);
+	const auto maxR = static_cast<float>(std::min(width(), height())) * 0.5f;
+	const auto r = std::min(static_cast<float>(m_radius), maxR);
 	out[0] = r;
 	out[1] = r;
 	out[2] = r;
diff --git a/Plugins/ZShell/Blobs/blobshape.hpp b/Plugins/ZShell/Blobs/blobshape.hpp
index f130c23..aa1d018 100644
--- a/Plugins/ZShell/Blobs/blobshape.hpp
+++ b/Plugins/ZShell/Blobs/blobshape.hpp
@@ -85,8 +85,6 @@ QVector<BlobRectData> m_cachedRects;
 int m_cachedMyIndex = -2;
 float m_pendingDx = 0;
 float m_pendingDy = 0;
-float m_pendingDw = 0;
-float m_pendingDh = 0;
 bool m_cachedHasInverted = false;
 float m_cachedInvertedRadius = 0;
 float m_cachedInvertedOuter[4] = {};
diff --git a/shell.qml b/shell.qml
index 9bf3bc9..6aa0bb2 100644
--- a/shell.qml
+++ b/shell.qml
@@ -1,6 +1,7 @@
 //@ pragma UseQApplication
 //@ pragma Env QSG_RENDER_LOOP=threaded
 // @ pragma Env QSG_RHI_BACKEND=vulkan
+//@ pragma Env QSG_NO_VSYNC=1
 //@ pragma Env QSG_USE_SIMPLE_ANIMATION_DRIVER=0
 //@ pragma Env QS_NO_RELOAD_POPUP=1
 //@ pragma Env QT_SCALE_FACTOR_ROUNDING_POLICY=Round