I don't think the last race did the DRS right, but the first few races used the DRS better. The point is the DRS should bring a driver almost along side, so if

I don't think the last race did the DRS right, but the first few races used the DRS better. The point is the DRS should bring a driver almost along side, so if you have the advantage in terms of grip, you'd be able to pass. Before the DRS, you can be catching a car 1+ seconds a lap, but can't get close enough because you start hitting the turbulent air from the car in front. The whole point is to get rid of this problem without making passing too easy.