Lowest delay way to connect functions to key presses

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#1

what is the best way to connect functions to key presses in the least delayed way? The least delay, the better. I’m working on custom movement for… Something… And I need lowest latency possible.

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#2

I believe it’s easier to connect functions with CAS instead of UIS.

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#3

So, I tested this and it is pretty clear that ContextActionService is much faster everytime.

Code I made for testing:

--!strict
local cas: ContextActionService = game:GetService("ContextActionService")
local uis: UserInputService = game:GetService("UserInputService")

local function handle_action(_, input_state: Enum.UserInputState)
	if input_state ~= Enum.UserInputState.Begin then return end
	
	print("cas:", tick())
end

local function handle_uis(key)
	if key.KeyCode ~= Enum.KeyCode.X then return end

	print("uis:", tick())
end

uis.InputBegan:Connect(handle_uis)
cas:BindAction("input", handle_action, false, Enum.KeyCode.X)

Which simply prints tick of the server.

well, it shows that the is some delay improvement… I guess that answers my question