ShiftLock Making camera buggy

So i have a shiftlock system when people aim the gun but when they go in shift lock
the camera starts bugging out video is right here

-- 
local function shiftLock(active)
	if active and script.Parent.Parent:FindFirstChild("Humanoid").Health ~= 0 and plr.Character:WaitForChild("Humanoid").Sit ~= true then
		plr.Character:WaitForChild("CamSway").Enabled = false
		plr.Character:WaitForChild("CamSway_OnMouse").Enabled = false
		hum.CameraOffset = Vector3.new( 3, 0, -3) 
		hum.AutoRotate = true
		RunService:BindToRenderStep("ShiftLock", Enum.RenderPriority.Character.Value, function()
			UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter

			local _, y = workspace.CurrentCamera.CFrame.Rotation:ToEulerAnglesYXZ()
			root.CFrame = CFrame.new(root.Position) * CFrame.Angles(0, y , 0)
			plr.Character:FindFirstChild("CamSway").Enabled = false
			plr.Character:FindFirstChild("CamSway_OnMouse").Enabled = false
			print("sway disabled")
		end)

		-- Lock camera zoom while aiming
		if isAiming then
			plr.CameraMinZoomDistance = 10
			plr.CameraMaxZoomDistance = 10

			-- Select animation based on ToggleNewAnim value
			local anim
			if script.Parent.ToggleNewAnim.Value == false then
				anim = game.ReplicatedStorage.Anims.PistolAnims:FindFirstChild("Aim1")
			else
				anim = game.ReplicatedStorage.Anims.PistolAnims:FindFirstChild("Aim2")
			end

			-- Play the selected animation if it exists
			if anim then
				animtrack = plr.Character:FindFirstChild("Humanoid"):LoadAnimation(anim)
				animtrack:Play()
				HoldAnim:Stop()
			else
				warn("Animation not found")
			end
		end
	else
		hum.CameraOffset = Vector3.new(0, 0, 0) -- Reset offset
		RunService:UnbindFromRenderStep("ShiftLock")
		UserInputService.MouseBehavior = Enum.MouseBehavior.Default
		hum.AutoRotate = true
		plr.CameraMinZoomDistance = 0.5
		plr.CameraMaxZoomDistance = 15
		UserInputService.MouseIconEnabled = true

		-- Stop aiming animation if it's playing
		if animtrack then
			animtrack:Stop()
			HoldAnim:Play()
		end
	end
end