Replace sleep with uiSleep

see the below links for more info. uiSleep is based off of a more
accurate method of tracking time, whereas sleep can fluctuate depending
on application performance since it is based on framerate.
https://community.bistudio.com/wiki/uiSleep
https://community.bistudio.com/wiki/sleep_vs_uiSleep
https://community.bistudio.com/wiki/sleep

SQF/dayz_code/actions/pzombie/pz_attack.sqf

@@ -21,6 +21,6 @@ if (!isNull cursorTarget) then {
 		[player,"hit",0,false] call dayz_zombieSpeak;
 
 	};
-	sleep 1;
+	uiSleep 1;
 	player switchmove "";
 };

SQF/dayz_code/actions/pzombie/pz_feed.sqf

@@ -13,7 +13,7 @@ if(!(alive _item)) then {
 	_move = "ZombieFeed" + str(_rnd);
 	player playMoveNow _move;
 
-	sleep 1;
+	uiSleep 1;
 
 	// player playActionNow "PutDown";
 	[player,50,true,(getPosATL player)] spawn player_alertZombies;
@@ -22,7 +22,7 @@ if(!(alive _item)) then {
 
 	_item setVariable["meatHarvested",true,true];
 
-	sleep 1;
+	uiSleep 1;
 
 	_regen = 200;
 

SQF/dayz_code/actions/pzombie/pz_vision.sqf

@@ -50,7 +50,7 @@ while { aperture < _oldAperture } do
 {
 	aperture = aperture + 0.0005;
 	setAperture aperture;
-	sleep 0.001;
+	uiSleep 0.001;
 };
 
 player setVariable ["NV", ["ON", _oldAperture]];