Only if you know how long it will take to render a frame.
If you render "as fast as possible (to a max of xyz hz), you get better worst case performance than if you delay compositing. A render time of 2 physical frames results in only 1 missed frame instead of a render time of 1.26 physical frames resulting in 2 missed frames.
Of course nothing is simple in the real world, the flip side is rendering the extra frames creates waste heat that slows down modern processors with insufficient cooling.
If you render "as fast as possible (to a max of xyz hz), you get better worst case performance than if you delay compositing. A render time of 2 physical frames results in only 1 missed frame instead of a render time of 1.26 physical frames resulting in 2 missed frames.
Of course nothing is simple in the real world, the flip side is rendering the extra frames creates waste heat that slows down modern processors with insufficient cooling.