When is the light (it does not matter if spotlight or TEK lamp) in-game fixed? When the light is set to dark and moves farther away from the base and comes back, the light is bright again. The same thing, if you switch on the desktop and back, the light is bright again.
When will the leaves / needles and water in the game be fixed? In scorched earth and Extinction it is the trees no foliage or needles bear, one reckons no more with it, then they are suddenly back, in full splendor.
Similar behavior on Extinction, with the water, rivers and lakes, it is loaded much later.