improve image caching for better performance

Modules/Launcher/CarouselView.qml

@@ -233,7 +233,19 @@ Item {
 	}
 
 	implicitHeight: tileHeight + Tokens.spacing.small / 2 + Tokens.padding.large + Tokens.padding.normal
-	implicitWidth: screen ? Math.max(0, screen.width - Config.bar.rounding * 50 - panels.bar.implicitWidth * 2) : 0
+	implicitWidth: {
+		if (!screen)
+			return 0;
+
+		const barMargins = Config.bar.border * 2;
+		let margins = 0;
+		if (visibilities.utilities || visibilities.sidebar)
+			margins = panels.utilities.implicitWidth;
+		const maxWidth = screen.width - (barMargins + margins) * 2 - Config.bar.rounding * 4;
+
+		return maxWidth;
+	}
+	width: implicitWidth
 
 	Component.onCompleted: {
 		const idx = Wallpapers.list.findIndex(w => w.path === Wallpapers.actualCurrent);
@@ -248,7 +260,7 @@ Item {
 
 		anchors.fill: parent
 		boundsBehavior: Flickable.StopAtBounds
-		cacheBuffer: root.width * 10
+		cacheBuffer: root.width
 		clip: false
 		currentIndex: root.centerBlockStart
 		displayMarginBeginning: root.arrangement.effectiveExtraWidth