diff --git a/HealBotBlue.toc b/HealBotBlue.toc
index b97c33e..7c0d6b0 100644
--- a/HealBotBlue.toc
+++ b/HealBotBlue.toc
@@ -1,6 +1,6 @@
 ## Interface: 11200
 ## Title: HealBotBlue
-## Version: 1.6.4
+## Version: 1.6.5
 ## Author: Bluewhale
 ## Notes: Adds panel with skinable bars for healing and decursive
 ## SavedVariablesPerCharacter:  HealBot_Config
diff --git a/HealBot_Controller_Events.lua b/HealBot_Controller_Events.lua
index ab094dd..f8ec5bd 100644
--- a/HealBot_Controller_Events.lua
+++ b/HealBot_Controller_Events.lua
@@ -2,6 +2,7 @@
 -- Manages WoW Frame events and periodic updates, routing to respective services
 
 HealBot_View_DirtyUnits = {}
+HealBot_View_DirtyPower = {}
 local HealBot_Timer1, HealsIn_Timer = 0, 0;
 HealBot_LastModState = ""
 
@@ -20,7 +21,7 @@ function HealBot_OnLoad(this)
         HealBot_View_DirtyUnits[unitID] = true
     end)
     HealBot_Model:RegisterObserver("UNIT_POWER_CHANGED", function(unitID)
-        HealBot_View_DirtyUnits[unitID] = true
+        HealBot_View_DirtyPower[unitID] = true
     end)
     HealBot_Model:RegisterObserver("UNIT_AURA_CHANGED", function(unitID)
         HealBot_View_DirtyUnits[unitID] = true
@@ -78,9 +79,17 @@ function HealBot_OnUpdate(this, arg1)
     while unitID do
         HealBot_Action_RefreshButtons(unitID)
         HealBot_View_DirtyUnits[unitID] = nil
+        HealBot_View_DirtyPower[unitID] = nil -- Skip fast path if doing full refresh
         unitID, _ = next(HealBot_View_DirtyUnits)
     end
     
+    local powerID, _ = next(HealBot_View_DirtyPower)
+    while powerID do
+        HealBot_Action_RefreshPower(powerID)
+        HealBot_View_DirtyPower[powerID] = nil
+        powerID, _ = next(HealBot_View_DirtyPower)
+    end
+    
     if HealBot_EquipChangeTimer > 0 then
         HealBot_EquipChangeTimer = HealBot_EquipChangeTimer - arg1
         if HealBot_EquipChangeTimer <= 0 then
diff --git a/HealBot_View_Layout.lua b/HealBot_View_Layout.lua
index fff26d8..138af47 100644
--- a/HealBot_View_Layout.lua
+++ b/HealBot_View_Layout.lua
@@ -303,6 +303,21 @@ function HealBot_Action_RefreshButtons(unit)
     end
 end
 
+function HealBot_Action_RefreshPower(unit)
+    if not unit or not HealBot_Action_UnitButtons[unit] then return end
+    local state = HealBot_Model.units[unit]
+    if not state then return end
+    
+    for index, button in pairs(HealBot_Action_UnitButtons[unit]) do
+        if not button.bar3 then button.bar3 = getglobal(button:GetName() .. "Bar3") end
+        local bar3 = button.bar3
+        if bar3 and bar3:IsVisible() then
+            bar3:SetMinMaxValues(0, state.maxMana)
+            bar3:SetValue(state.mana)
+        end
+    end
+end
+
 function HealBot_Action_PositionButton(button, OsetX, OsetY, bwidth, bheight, checked, header)
     local brspace = HealBot_Config.brspace[HealBot_Config.Current_Skin] or 3;
     if header then
diff --git a/README.md b/README.md
index 9fd55d4..ba988c2 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,9 @@ Default installation path: `C:\Program Files\World of Warcraft\Interface\AddOns\
 
 ### Change Log
 
+**v1.6.5**
+* **Performance Update - Mana Tracking** - Added a fast-path redraw pipeline for unit power changes. This massive optimization prevents full frame redraws when players naturally regenerate or consume mana, resolving severe FPS drops in 40-man raids while tracking mana.
+
 **v1.6.4**
 * **Bug Fix - UI Opacity** - Fixed a rendering layering bug where incoming heals drew on top of actual health, causing the semi-transparent incoming heal bar to wash out the solid health bar.
 * **Bug Fix - CDC Colors** - Fixed health bar debuff coloring (CDC) by stopping `HealBot_HealthColor` from incorrectly querying debuffs directly, relying instead on cached debuff types.