Tottaly agree, those things in the mod right now are not zombies, but some highly mutaded and specialized predators. Zombies should be slow, killed only by headshots or two full magazines into chest. Right now it's just silly to watch how zombie who has problems standing straight without falling over, turns into zigzaging farmer running with the speed of cheetah in the moment they aggro on you. Making them slower but more bulletproof would also fix issue with them running after you for the whole map and stopping when they try to hit you over and over.