It's hard to see in low fidelty. If you're playing on 3v3 or 2v2 on Cataract, and not doing crazy battles with a lot of players and giants and stuff like that, they if you increase Level of Detail to 'Medium' and leave the rest on 'Low' you should be able to see it a lot better (Fidelity on 'Medium' may also be necassary, though I know that Texture Detail can remain 'Low' because that's how I have it set. I sometimes drop to 2 sim speed on 4+ matches, but only at the very end and 2 simspeed doesn't cause lag (though 0 does, and so it's pretty close)).