Li Shenron
Legend
The multiple rolls did slow down combat too much but the stagnation that I disliked was caused by the five foot step. Our 3.x combats would reach a point where there was next to no maneuvering. The PCs and NPCs with multiple attacks would take the first round or two to get in place and from then on they would park and full-attack. It made combats very boring to me.
Then it should be better in 5e since you can split your movement per round as you wish, unless the new iterative attacks require to give up the move action but I don't think so.