Screen Sharing “pauses” when the window is minimized

When you screen share to another Mac, and then minimize the screen share window to the Dock, it appears to “pause” until you un-hide the window.

(The easiest way to see this is if you have the clock in your menubar and minimize the window for several minutes. When you un-hide the window, the clock will be several minutes slow at first, but will quickly catch up. I noticed this while over a high-latency satellite Internet connection, which may have made the update lag more noticeable.

I assume that this is done for bandwidth and/or CPU savings. If the window is minimized, obviously it isn’t in use and therefore doesn’t need to be updated. Even over my slow Internet connection, the update was pretty quick.