Most of my playtime is spent doing recon style stuff. Generally if you focus on a location that's likely to have traffic then the movement speed isn't as much of a factor. For example, if you're observing a military base, as well as anyone occupying it, the chances are units will show up at some point. Same deal with main roads. If vehicles are going to move through an area when ALiVE spawns them in they'll move to the nearest road and move along that... Where you will be waiting. With binoculars. And lotsa lotsa boom boom. I do tend to use either 50% or 75% though just because I prefer that pace. Otherwise after a few hours of playing an AI commander can just take over the world it seems!