Rebind Camera Panning

Should work, make sure to put deltaX and deltaY in math.rad() as CFrame.Angles() requires radians, and also so the numbers will be proportional to the mouse movement.
Edit:

RunService.RenderStepped:Connect(function()
	UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter
	local deltaX = UserInputService:GetMouseDelta().X
	local deltaY = UserInputService:GetMouseDelta().Y
	Camera.CFrame = Camera.CFrame * CFrame.Angles(math.rad(deltaX), math.rad(deltaY), 0)
end)