Camera hands animation problem

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Hello devs!
I wanted do script which playing animations in animation controller of hands in camera but i got problem.
When i start gun equipping animation again(player equipped tool) animation dont starts for 1 frame but then it starts.
Here all code:

local Events = script.Parent.Events
local CurConfig = nil
local CurToolInHands = nil
local CurToolInCharacter = nil
local CurHands = nil
local EquipConnection = nil
local ToolEquipped = false


-----------------------------Loading anims
for _,Config in pairs(game.ReplicatedStorage.Configurations:GetChildren()) do
	if Config.ClassName == "Configuration" then
		for _,Anim in pairs(Config.Data:GetChildren()) do
			if Anim.ClassName == "Animation" then
				require(Config.Data).Animations[Anim.Name] = Config:FindFirstChildOfClass("Model").AnimationController:LoadAnimation(Anim)
			end
		end
	end
end

------------------------------Functions



-----------------------------Events

Events.EquipConfig.Event:Connect(function(Config,Tool)
	if Config ~= CurConfig then
		if EquipConnection then
			EquipConnection:Disconnect()
			EquipConnection = nil
		end
		if CurHands then
			for Index,Anim in pairs(CurHands.AnimationController:GetPlayingAnimationTracks()) do
				Anim:Stop(0)
			end
			CurHands.Parent = nil
		end
		CurConfig = Config
		CurToolInCharacter = Tool
		local Data = require(Config.Data)
		CurHands = Data.FrameworkValues.Hands
		CurHands.Parent = workspace.CurrentCamera
		CurToolInHands = CurHands:FindFirstChildOfClass("Model")
		if Data.Animations.EquippingAnim then
			Data.Animations.EquippingAnim:Play(0)
			EquipConnection = Data.Animations.EquippingAnim.Stopped:Connect(function()
				EquipConnection:Disconnect()
				EquipConnection = nil
				ToolEquipped = true
				if Data.Animations.HandlingAnim then
					Data.Animations.HandlingAnim:Play(0)
				end
			end)
		else
			ToolEquipped = true
			if Data.Animations.HandlingAnim then
				Data.Animations.HandlingAnim:Play(0)
			end
		end
	end
end)



-----------------------Hands render
game:GetService("RunService").RenderStepped:Connect(function(DT)
	if CurHands then
		CurHands:SetPrimaryPartCFrame(workspace.CurrentCamera.CFrame)
	end
end)

And here a video:


(Pm tool dont have equipping anim so its just dont playing it)
So how you see sometimes when i equip ak it dont play anim for one frame but then doing it