A question about missile graphics

I have recently bought TW: Attila, and it's fascinating... however I only have the mac version, and for some reason, my graphic card doesn't seem to be supporting the game as much as I'd like, but no matter, it's just a tad bit slower.

However, I have seen some TW: Attila playthroughs on Youtube, and when the missile units fire their arrows and javelins, there are "lines" showing where they are firing. I can't see that in my game. I wonder if that's something that was not ticked on the graphic options, because I can't find any help...

Please let me know if you know what I am talking about!!

There should be an option for missle trails somewhere in the game settings if its not in the graphics section. You might have to go to the advanced settings to find it but its there somewhere.