The current media surface solution enforces a 4 second/URL throttle. This makes it all but impossible to implement an acceptable slide presentation solution.
It would be very useful to be able to override this throttle, perhaps in limited cases such as when the URLs ends with an extension known to be a static image (.jpg, .png, etc.)
Alternatively, an entirely different feature for slide presentation should be considered. This is going to be a common use case for Sansar.