Found the answer here: https://answers.launchpad.net/sikuli/+question/214163
** Changed in: sikuli Status: New => Invalid -- You received this bug notification because you are a member of Sikuli Drivers, which is subscribed to Sikuli. https://bugs.launchpad.net/bugs/1540233 Title: [1.1.0] ObserveScanRate without any function Status in Sikuli: Invalid Bug description: Hi, as far as I understood from the documentation the properties WaitScanRate and ObserveScanRate should be the same function. But ObserveScanRate does not change anything in my case but WaitScanRate behaves as expected. Even worse is that only the ObserveScanRate can be set for a region. Here is my test. public class SikuliTest { public static void main(String[] args) { try { // Settings.WaitScanRate = 0.1f; // Does work // Settings.ObserveScanRate = 0.1f; /Does not work Region searchRegion = new Screen(); searchRegion.setObserveScanRate(0.1f); // Does not work Long startingTime = System.currentTimeMillis(); Match match = searchRegion.wait("cancel_button.png", Constants.FOREVER); match.click(); System.out.println("Thread1: " + (System.currentTimeMillis() - startingTime) + "ms"); } catch (FindFailed e) { // TODO Auto-generated catch block e.printStackTrace(); } } } If I bring the desired target to the screen after the program started I get always a similar reaction time. [log] CLICK on L(280,194)@S(0)[0,0 2560x1440] Thread1: 4157ms With 0.1f I would have expected that Sikulix searches every 10 seconds with a lower CPU usage, but it is always the same. It has also no effect if I set the observe scan rate via the global settings. Only Settings.WaitScanRate behaves as expected. Edited on 03-02-2016, when I realized the difference between WaitScanRate and ObserveScanRate. To manage notifications about this bug go to: https://bugs.launchpad.net/sikuli/+bug/1540233/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~sikuli-driver Post to : sikuli-driver@lists.launchpad.net Unsubscribe : https://launchpad.net/~sikuli-driver More help : https://help.launchpad.net/ListHelp