Why monsters need to be slowed WAY the f down

So you give us this great mechanic to avoid trouble dodge roll.... only problem is unless you have 30% MS the mobs are fast enough that by the time you get OUT of the roll animation they are right on top of you again. So if you want to try to open the range? Good effing luck, the mobs have rocket boots on and will catch you unless you sprint 3 screens away. Literally just opened a strongbox, in campaign, and even after 3 consecutive dodge rolls the 2 rare mobs and all their friends were still right on top of me (oh and I started almost a full screen away from them, got ONE attack off before they were on top of me chain slamming.)

PLEASE GGG, SLOW DOWN THE MOBS OR MAKE THEM NOT HIT LIKE A MACK TRUCK EVERY SINGLE TIME THEY SWING AT YOU.