Yea same here especially during the morning time where I live it's incredibly empty. To the evening it picks up.
I believe this has got to do with this so called "server optimization" which clearly doesn't work cause if it were to work then when I do join a game I wouldn't have rubberbanding lags and such.
But I do so nothing is being optimized, actually the only think being optimized is the chance of not getting into a game, that's optimized so well that it even works.
But I hope they fix this, a huge load of problems came with the free dlc.