Is there anyway to keep a surface light the same?

I'm making a horror game and I need a round light

game.Players.PlayerAdded:Connect(function(plr)

	plr.CharacterAdded:Connect(function(char)

		local Light = Instance.new("SurfaceLight")

		Light.Name = "Light"

		Light.Face = "Front"

		Light.Brightness = 1

		Light.Range = 60

		Light.Parent = char:WaitForChild("Head")

	end)

end)

this script works but only on high quality, when you go to low quality the round light turns into a giant square is there anyway to keep the light the same

Unfortunately, no. You can, however, tell the player something like "A graphics level of 8 or higher is recommended" via text.