Zombies do not run anymore.

This is compatible with -
State of Decay (original story)
Breakdown
Lifeline

Makes all regular zombies just shuffle, no more running or sprinting zombies. Rare zombies still move at their normal pace.

Installation -
Unzip and copy the "Game" folder into
(C:) > Program Files (x86) > Steam > SteamApps > common > State of Decay
(or wherever you installed the game)
Click yes to overwrite.