Yeah I've been looking for this as well, but haven't been able to find anything that works.
The suggestion itself is to add an option in the options menu so it's easy to enable/disable.
This is more of a thing directed at making FPS for lower end PC's better, more so since I'm one of those people that get a decent 25-30fps (which is fine) indoors and when looking at the sky then below 10 outdoors or looking at the ground (outside) with all graphics on the lowest settings and...