After months of testing and research I have released the
R_Speeds Tutorial.
If you thought you understood why maps became Laggy, or why using func_entities was good for reducing r_speeds, then you might want to read this tutorial. A lot of the common myths about reducing speeds in the map are discussed. Some of them might surprise the veteran mapper.
I forgot to mention that I had posted the
Dimensions tutorial during the week, a good place to start if you need to know unit height, width and length for your Maps.