diff --git a/addons/hearing/XEH_postInit.sqf b/addons/hearing/XEH_postInit.sqf
index b8745acaaa..4ff2f84b6c 100644
--- a/addons/hearing/XEH_postInit.sqf
+++ b/addons/hearing/XEH_postInit.sqf
@@ -2,6 +2,9 @@
 
 if (!hasInterface) exitWith {};
 
+GVAR(cacheAmmoLoudness) = createLocation ["ACE_HashLocation", [-10000,-10000,-10000], 0, 0];
+GVAR(cacheAmmoLoudness) setText QGVAR(cacheAmmoLoudness);
+
 GVAR(deafnessDV) = 0;
 GVAR(deafnessPrior) = 0;
 GVAR(volume) = 1;
diff --git a/addons/hearing/functions/fnc_earRinging.sqf b/addons/hearing/functions/fnc_earRinging.sqf
index f4db19e6ea..cda5fa508e 100644
--- a/addons/hearing/functions/fnc_earRinging.sqf
+++ b/addons/hearing/functions/fnc_earRinging.sqf
@@ -28,11 +28,12 @@ if (_unit getVariable ["ACE_hasEarPlugsin", false]) then {
 
 //headgear hearing protection
 if(headgear _unit != "") then {
-    private ["_protection"];
-    _protection = (getNumber (configFile >> "CfgWeapons" >> (headgear _unit) >> QGVAR(protection))) min 1;
+    private _protection = (getNumber (configFile >> "CfgWeapons" >> (headgear _unit) >> QGVAR(protection))) min 1;
     if(_protection > 0) then {
         _strength = _strength * (1 - _protection);
     };
 };
 
+TRACE_2("adding",_strength,GVAR(deafnessDV));
+
 GVAR(deafnessDV) = GVAR(deafnessDV) + _strength;
diff --git a/addons/hearing/functions/fnc_firedNear.sqf b/addons/hearing/functions/fnc_firedNear.sqf
index 1ee84a2dc8..31f693bafd 100644
--- a/addons/hearing/functions/fnc_firedNear.sqf
+++ b/addons/hearing/functions/fnc_firedNear.sqf
@@ -32,31 +32,28 @@ if ((ACE_player != _object) && {(vehicle ACE_player) != _object}) exitWith {};
 if (_weapon in ["Throw", "Put"]) exitWith {};
 if (_distance > 50) exitWith {};
 
-private ["_silencer", "_audibleFireCoef", "_loudness", "_strength", "_vehAttenuation", "_magazine", "_muzzles", "_weaponMagazines", "_muzzleMagazines", "_ammoType", "_initSpeed", "_ammoConfig", "_caliber"];
+private _vehAttenuation = if ((ACE_player == (vehicle ACE_player)) || {isTurnedOut ACE_player}) then {1} else {GVAR(playerVehAttenuation)};
+private _distance = 1 max _distance;
 
-_vehAttenuation = if ((ACE_player == (vehicle ACE_player)) || {isTurnedOut ACE_player}) then {1} else {GVAR(playerVehAttenuation)};
-
-_distance = 1 max _distance;
-
-_silencer = switch (_weapon) do {
+private _silencer = switch (_weapon) do {
     case (primaryWeapon _firer) : {(primaryWeaponItems _firer) select 0};
     case (secondaryWeapon _firer) : {(secondaryWeaponItems _firer) select 0};
     case (handgunWeapon _firer) : {(handgunItems _firer) select 0};
     default {""};
 };
 
-_audibleFireCoef = 1;
+private _audibleFireCoef = 1;
 if (_silencer != "") then {
     _audibleFireCoef = getNumber (configFile >> "CfgWeapons" >> _silencer >> "ItemInfo" >> "AmmoCoef" >> "audibleFire");
 };
 
-_weaponMagazines = missionNamespace getVariable [format[QEGVAR(common,weaponMagazines_%1),_weapon], []];
-if (count _weaponMagazines == 0) then {
-    _muzzles = getArray (configFile >> "CfgWeapons" >> _weapon >> "muzzles");
-    _weaponMagazines = getArray (configFile >> "CfgWeapons" >> _weapon >> "magazines");
+private _loudness = GVAR(cacheAmmoLoudness) getVariable (format ["%1%2",_weapon,_ammo]);
+if (isNil "_loudness") then {
+    private _muzzles = getArray (configFile >> "CfgWeapons" >> _weapon >> "muzzles");
+    private _weaponMagazines = getArray (configFile >> "CfgWeapons" >> _weapon >> "magazines");
     {
         if (_x != "this") then {
-            _muzzleMagazines = getArray (configFile >> "CfgWeapons" >> _weapon >> _x >> "magazines");
+            private _muzzleMagazines = getArray (configFile >> "CfgWeapons" >> _weapon >> _x >> "magazines");
             _weaponMagazines append _muzzleMagazines;
         };
     } count _muzzles;
@@ -64,34 +61,39 @@ if (count _weaponMagazines == 0) then {
         _ammoType = getText(configFile >> "CfgMagazines" >> _x >> "ammo");
         _weaponMagazines set [_forEachIndex, [_x, _ammoType]];
     } forEach _weaponMagazines;
-    missionNamespace setVariable [format[QEGVAR(common,weaponMagazines_%1),_weapon], _weaponMagazines];
-};
 
-_magazine = "";
-{
-    _x params ["_magazineType", "_ammoType"];
-    if (_ammoType == _ammo) exitWith {
-        _magazine = _magazineType;
+    private _magazine = "";
+    {
+        _x params ["_magazineType", "_ammoType"];
+        if (_ammoType == _ammo) exitWith {
+            _magazine = _magazineType;
+        };
+    } count _weaponMagazines;
+
+    if (_magazine == "") then {
+        _loudness = 0;
+        TRACE_2("No mag for Weapon/Ammo??",_weapon,_ammo);
+    } else {
+        private _initSpeed = getNumber(configFile >> "CfgMagazines" >> _magazine >> "initSpeed");
+        private _caliber = getNumber (configFile >> "CfgAmmo" >> _ammo >> "ACE_caliber");
+        _caliber = call {
+            if (_ammo isKindOf ["ShellBase", (configFile >> "CfgAmmo")]) exitWith { 80 };
+            if (_ammo isKindOf ["RocketBase", (configFile >> "CfgAmmo")]) exitWith { 200 };
+            if (_ammo isKindOf ["MissileBase", (configFile >> "CfgAmmo")]) exitWith { 600 };
+            if (_ammo isKindOf ["SubmunitionBase", (configFile >> "CfgAmmo")]) exitWith { 80 };
+            if (_caliber <= 0) then { 6.5 } else { _caliber };
+        };
+
+        _loudness = (_caliber ^ 1.25 / 10) * (_initspeed / 1000) / 5;
+        TRACE_6("building cache",_weapon,_ammo,_magazine,_initSpeed,_caliber,_loudness);
     };
-} count _weaponMagazines;
-
-if (_magazine == "") exitWith {};
-
-_initSpeed = getNumber(configFile >> "CfgMagazines" >> _magazine >> "initSpeed");
-_ammoConfig = (configFile >> "CfgAmmo" >> _ammo);
-_caliber = getNumber(_ammoConfig >> "ACE_caliber");
-_caliber = call {
-    if (_ammo isKindOf ["ShellBase", (configFile >> "CfgAmmo")]) exitWith { 80 };
-    if (_ammo isKindOf ["RocketBase", (configFile >> "CfgAmmo")]) exitWith { 200 };
-    if (_ammo isKindOf ["MissileBase", (configFile >> "CfgAmmo")]) exitWith { 600 };
-    if (_ammo isKindOf ["SubmunitionBase", (configFile >> "CfgAmmo")]) exitWith { 80 };
-    if (_caliber <= 0) then { 6.5 } else { _caliber };
+    GVAR(cacheAmmoLoudness) setVariable [(format ["%1%2",_weapon,_ammo]), _loudness];
 };
-_loudness = (_caliber ^ 1.25 / 10) * (_initspeed / 1000) * _audibleFireCoef / 5;
-_strength = _vehAttenuation * (_loudness - (_loudness / 50 * _distance)); // linear drop off
 
-//systemChat format["%1 : %2", _strength, _initSpeed];
-//systemChat format["%1 : %2 : %3", _weapon, _magazine, _initSpeed];
+_loudness = _loudness * _audibleFireCoef;
+private _strength = _vehAttenuation * (_loudness - (_loudness / 50 * _distance)); // linear drop off
+
+TRACE_1("result",_strength);
 
 if (_strength < 0.01) exitWith {};
 
diff --git a/addons/hearing/functions/fnc_updateVolume.sqf b/addons/hearing/functions/fnc_updateVolume.sqf
index e36151aea4..5492dcd080 100644
--- a/addons/hearing/functions/fnc_updateVolume.sqf
+++ b/addons/hearing/functions/fnc_updateVolume.sqf
@@ -1,6 +1,6 @@
 /*
  * Author: commy2 and esteldunedain and Ruthberg
- * Updates and applys the current deafness.  Called every 0.1 sec from a PFEH.
+ * Updates and applys the current deafness.  Called every 1 sec from a PFEH.
  *
  * Arguments:
  * 0: Args <ARRAY>
@@ -19,7 +19,6 @@
 //Only run if deafness or ear ringing is enabled:
 if ((!GVAR(enableCombatDeafness)) && GVAR(DisableEarRinging)) exitWith {};
 
-private["_volume", "_soundTransitionTime"];
 (_this select 0) params ["_justUpdateVolume"];
 
 
@@ -71,7 +70,7 @@ if (!_justUpdateVolume) then {
 
 if ((missionNameSpace getVariable [QGVAR(disableVolumeUpdate), false]) || {!GVAR(enableCombatDeafness)}) exitWith {};
 
-_volume = GVAR(volume);
+private _volume = GVAR(volume);
 
 // Earplugs reduce hearing 50%
 if ([ACE_player] call FUNC(hasEarPlugsIn)) then {
@@ -92,7 +91,7 @@ if (ACE_player getVariable ["ACE_isUnconscious", false]) then {
     _volume = _volume min GVAR(UnconsciousnessVolume);
 };
 
-_soundTransitionTime = if (_justUpdateVolume) then {0.1} else {1};
+private _soundTransitionTime = if (_justUpdateVolume) then {0.1} else {1};
 
 _soundTransitionTime fadeSound _volume;
 _soundTransitionTime fadeSpeech _volume;