Ideal for any games that prefer a lower frame rate for aesthetic reasons. 

Put the "Frame Limiter" Component anywhere your heart desires. 
Then drag in your Target Camera into the Target Camera field. 
Set your Frame Rate and it should just work.

This uses HudPainter to simulate a lower frame rate by rendering a new frame to the RenderTexture every x amount of times per second, creating the illusion of being at a lower frame rate without actually dropping to it. 
This does *not* save on performance, the client is still rendering all of their frames, frankly it probably makes it slightly worse. So don't use it if you're trying to optimize for loading screens!

I have *not* tested all the niche cases regarding RenderTextures, there may be some elements that do not render, I haven't ran into any yet though.
However, UI elements such as those on ScreenPanels *do* get rendered to the RenderTexture, even though they are not part of the image itself, causing overlapping UI if your frame doesn't update in time. I don't think there's anything I can do about this though.