Efficient way of checking characters proximity to position?

I would like to know if there is an objectively better / more efficient way to achieve the same functionality as the following code.

Note: This code is in a LocalScript located inside StarterPlayerScripts.

local NPCModule = require(script.Parent)
local Player = game.Players.LocalPlayer
local Character = game.Workspace:WaitForChild(Player.Name)
local Humanoid = Character:WaitForChild("Humanoid")

local NPCs = {}
for _, NPC in pairs(game.Workspace.NPCs:GetChildren()) do
	table.insert(NPCs, NPC)
end

Humanoid.Changed:Connect(function()
	for _, NPC in pairs(NPCs) do
		local NPCPosition = NPC.HumanoidRootPart.CFrame.p
		local CharacterPosition = Character.HumanoidRootPart.CFrame.p
		local MaxDistance = 10
		if (NPCPosition - CharacterPosition).magnitude <= MaxDistance then
			--Do stuff
		end
	end
end)