modules/graphics/src/main/java/com/sun/javafx/tk/quantum/SwipeGestureRecognizer.java

@@ -111,13 +111,16 @@
         if (absSecondaryDistance > absPrimaryDistance * 0.839 /* tan(2Pi/9) */) {
             // too diagonal - in range of 10 degrees
             return null;
         }
 
-        if (maxSecondaryDeviation > absPrimaryLength / (tracker.getDuration() / 100.0)) {
-            // too imprecise for the performed speed (the slower movement, 
-            // the higher precision requred)
+        if (maxSecondaryDeviation > absPrimaryLength * 1.258 /* tan(2Pi/9) * 1.5 */) {
+            return null;
+        }
+
+        int swipeTimeLimit = Integer.getInteger("com.sun.javafx.gestures.swipe.swipetimelimit", 300);
+        if (tracker.getDuration() > swipeTimeLimit) {
             return null;
         }
 
         if (absPrimaryLength > absPrimaryDistance * 1.5) {
             // too much back and forth