diff --git a/OGCircularBar-Demo/ViewController.swift b/OGCircularBar-Demo/ViewController.swift
index f179cf7..974ffc9 100644
--- a/OGCircularBar-Demo/ViewController.swift
+++ b/OGCircularBar-Demo/ViewController.swift
@@ -21,9 +21,9 @@ class ViewController: NSViewController {
         barView.addCircleBar(radius: 100, width: 10, color: pink.withAlphaComponent(0.1))
         barView.addCircleBar(radius: 120, width: 15, color: blue.withAlphaComponent(0.1))
         barView.addCircleBar(radius: 80, width: 10, color: green.withAlphaComponent(0.1))
-        barView.addBar(progress: 0.80, radius: 100, width: 10, color: pink, animate: true, glowColor: pink.withAlphaComponent(0.5), glowRadius: 5)
-        barView.addBar(progress: 0.45, radius: 120, width: 15, color: blue, animate: true, glowColor: blue.withAlphaComponent(0.5), glowRadius: 5)
-        barView.addBar(progress: 0.65, radius: 80, width: 10, color: green, animate: true, glowColor: green.withAlphaComponent(0.5), glowRadius: 5)
+        barView.addBar(progress: 0.80, radius: 100, width: 10, color: pink, animate: true, duration: 1.5, glowOpacity: 0.4, glowRadius: 8)
+        barView.addBar(progress: 0.45, radius: 120, width: 15, color: blue, animate: true, duration: 1.5, glowOpacity: 0.4, glowRadius: 8)
+        barView.addBar(progress: 0.65, radius: 80, width: 10, color: green, animate: true, duration: 1.5, glowOpacity: 0.4, glowRadius: 8)
     }
     
     override var representedObject: Any? {
diff --git a/OGCircularBar.podspec b/OGCircularBar.podspec
index 0eea183..af8d8f7 100644
--- a/OGCircularBar.podspec
+++ b/OGCircularBar.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
 s.name              = 'OGCircularBar'
-s.version           = '1.0'
+s.version           = '1.1'
 s.summary           = 'Circular progress bar for macOS'
 s.homepage          = 'https://github.com/OskarGroth/OGCircularBar'
 s.license           = {
diff --git a/OGCircularBar.xcodeproj/xcuserdata/oskar.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/OGCircularBar.xcodeproj/xcuserdata/oskar.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
index 7e6478f..d965997 100644
--- a/OGCircularBar.xcodeproj/xcuserdata/oskar.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
+++ b/OGCircularBar.xcodeproj/xcuserdata/oskar.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
@@ -10,27 +10,11 @@
             ignoreCount = "0"
             continueAfterRunningActions = "No"
             filePath = "OGCircularBar/OGCircularBarView.swift"
-            timestampString = "514193270.468607"
+            timestampString = "514203286.75082"
             startingColumnNumber = "9223372036854775807"
             endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "45"
-            endingLineNumber = "45"
-            landmarkName = "addBar(progress:radius:width:color:animate:glowColor:glowRadius:)"
-            landmarkType = "7">
-         </BreakpointContent>
-      </BreakpointProxy>
-      <BreakpointProxy
-         BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
-         <BreakpointContent
-            shouldBeEnabled = "Yes"
-            ignoreCount = "0"
-            continueAfterRunningActions = "No"
-            filePath = "OGCircularBar/OGCircularBarView.swift"
-            timestampString = "514193312.915579"
-            startingColumnNumber = "9223372036854775807"
-            endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "121"
-            endingLineNumber = "121"
+            startingLineNumber = "110"
+            endingLineNumber = "110"
             landmarkName = "setProgress(_:duration:completion:)"
             landmarkType = "7">
             <Locations>
diff --git a/OGCircularBar/OGCircularBarView.swift b/OGCircularBar/OGCircularBarView.swift
index 111fb78..625ed49 100644
--- a/OGCircularBar/OGCircularBarView.swift
+++ b/OGCircularBar/OGCircularBarView.swift
@@ -22,7 +22,7 @@ public class OGCircularBarView: NSView, Sequence {
         super.awakeFromNib()
         setup()
     }
-
+    
     override public init(frame frameRect: NSRect) {
         super.init(frame: frameRect)
         setup()
@@ -35,28 +35,19 @@ public class OGCircularBarView: NSView, Sequence {
     
     func setup() {
         wantsLayer = true
-        layerUsesCoreImageFilters = true
     }
     
-    public func addBar(progress: CGFloat, radius: CGFloat, width: CGFloat, color: NSColor, animate: Bool, glowColor: NSColor?, glowRadius: CGFloat) {
+    public func addBar(progress: CGFloat, radius: CGFloat, width: CGFloat, color: NSColor, animate: Bool, duration: CGFloat, glowOpacity: Float, glowRadius: CGFloat) {
         let endAngle = 2*CGFloat.pi*progress
         let barLayer = CircularBarLayer(center: center, radius: radius, width: width, startAngle: 0, endAngle: endAngle, color: color)
-        if let glowColor = glowColor {
-            let glowLayer = CircularBarLayer(center: center, radius: radius, width: width, startAngle: 0, endAngle: endAngle, color: glowColor)
-            let groupLayer = CALayer()
-            groupLayer.frame = barLayer.frame
-            let filter = CIFilter(name: "CIGaussianBlur")!
-            filter.setValue(glowRadius, forKey: kCIInputRadiusKey)
-            glowLayer.filters = [filter]
-            groupLayer.addSublayer(glowLayer)
-            groupLayer.addSublayer(barLayer)
-            barLayer.glowLayer = glowLayer
-            layer!.addSublayer(groupLayer)
-        } else {
-            layer?.addSublayer(barLayer)
-        }
+        barLayer.shadowColor = color.cgColor
+        barLayer.shadowRadius = glowRadius
+        barLayer.shadowOpacity = glowOpacity
+        barLayer.shadowOffset = NSSize.zero
+        
+        layer?.addSublayer(barLayer)
         bars.append(barLayer)
-        barLayer.setProgress(progress, duration: 1.5)
+        barLayer.setProgress(progress, duration: duration)
     }
     
     public func addCircleBar(radius: CGFloat, width: CGFloat, color: NSColor) {
@@ -77,7 +68,6 @@ public class OGCircularBarView: NSView, Sequence {
 
 open class CircularBarLayer: CAShapeLayer, CALayerDelegate, CAAnimationDelegate {
     var completion: ((Void) -> Void)?
-    var glowLayer: CircularBarLayer?
     
     open var progress: CGFloat? {
         get {
@@ -118,9 +108,6 @@ open class CircularBarLayer: CAShapeLayer, CALayerDelegate, CAAnimationDelegate
     }
     
     open func setProgress(_ progress: CGFloat, duration: CGFloat, completion: ((Void) -> Void)? = nil) {
-        if let glowLayer = glowLayer {
-            glowLayer.setProgress(progress, duration: duration)
-        }
         let animation = CABasicAnimation(keyPath: "strokeEnd")
         animation.fromValue = strokeEnd
         animation.toValue = progress