Feature Request: Add Setting for Screensaver Run Time

There is a setting for screensaver "wait time" which sets when the screensaver turns on after inactivity but there is no setting for screensaver "run time".  Currently, all screensavers I have tried only run for 10 minutes or less before the Roku device goes into standby.  At this point, I end up with a static "Marantz" image from my AVP... not good for an OLED TV.  I would like to be able to set the screensaver to run for at least 1 hour minimum before the device goes into standby.