Fixing performance issues with my custom mouse handler

Help and Feedback Scripting Support
#1

I’ve been doing a lot of testing recently involving the microprofiler to look for sources of lag in my game. I have pinpointed the issue down to raycasting in my custom mouse handler. This is the entire event code for updating the mouse’s properties:

RunService:BindToRenderStep("MouseUpdate", 1, function()
	local position = Mouse:GetPosition()
	local unitRay = camera:ViewportPointToRay(position.X, position.Y)
	
	if not ignoreList.Character then
		ignoreList.Character = Player.Character
	end
	
	-- This isn't causing much lag but it's noticeable when looking at the microprofiler
	debug.profilebegin("MouseFiltering")
	raycastParams.FilterDescendantsInstances = Funcs.ConcatTables(Mouse.TargetFilter, ignoreList)
	debug.profileend("MouseFiltering")
	
	-- Raycasting is creating the majority of the lag
	debug.profilebegin("Raycasting")
	local raycastResult = workspace:Raycast(unitRay.Origin, unitRay.Direction * lengthCap, raycastParams)
	debug.profileend("Raycasting")
	
	if raycastResult then
		Mouse.Target = raycastResult.Instance
		Mouse.Hit = CFrame.new(raycastResult.Position)
		Mouse.HitNormal = raycastResult.Normal
	end
end)

The whole point of creating this mouse handler was to recreate the default Roblox mouse object but with better filtering for Mouse.Hit, Mouse.Target, and a new Mouse.HitNormal value. Considering how what makes it function is creating lag, is there a better way of doing this? Or maybe a key modification that I missed?