When using a Scheduler control in your Situational Awareness project, it is recommended you add a Scheduler instance to your project's master pages outside of the page bounds to avoid possible delays when loading Scheduler pages.
To add a Scheduler instance to a master page, follow the steps outlined in Add the Scheduler ActiveX Object to a Page.
Once pasted on the master page, move and position the Scheduler control outside the page border.
See also
Published June 2018