diff --git a/java/libraries/opengl/src/processing/opengl/PGL.java b/java/libraries/opengl/src/processing/opengl/PGL.java
index 43fbff4fe..7ea8d0c06 100644
--- a/java/libraries/opengl/src/processing/opengl/PGL.java
+++ b/java/libraries/opengl/src/processing/opengl/PGL.java
@@ -281,6 +281,9 @@ public class PGL {
   public void updatePrimary() {
     gl = context.getGL();
     gl2 = gl.getGL2();
+    
+    // disables vsync (framerate cap) on windows
+    gl.setSwapInterval(0);
   }
   
   public void updateOffscreen(PGL primary) {