EXP .61 todays update Zombie - Overly Sensitive

Don't know if this is a feature of the patch on purpose or not, but the Zombies are now so sensitive to movement and sound that you can barely crawl prone to escape them or go 100 meters plus around them so they don't aggro.. when they do agro now they call every zombie within ear shot.. I had as many as 20 chasing me after agro of the first one.
DOn't know if is as intended but .. slow the roll guys .. if you cant loot to get food and gear .. because of over sensitive zombies the game is no longer even fun.