Make NPC jump if moving slower than a certian speed?

I'm using the stock enemy npc and related scripts by xBattleBear.

I've successfully tweaked the scripts to my liking a few times, and now I'm trying to make the npc jump if it's moving slower than it should be, to get over obstacles.

I have two scripts - one for jumping, and one for following.

I've written this jump script myself - It works for around 5 seconds, and then the npc just starts jumping into the sky.

script.Parent.Humanoid.Running:Connect(function(speed)
	while true do
		wait(2)
		if speed < 2 and #script.Parent.follow:GetChildren() > 0 then
			wait(2)
			script.Parent.Humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
		end
	end
end)

And this is the following script I've worked to how I want. I have a part created so that the jumping script knows when to fire, because if I don't have some sort of check, the npc jumps like a madman.

function findNearestTorso(pos)
	local list = game.Workspace:children()
	local torso = nil
	local dist = 50
	local temp = nil
	local human = nil
	local temp2 = nil
	for x = 1, #list do
		temp2 = list[x]
		if (temp2.className == "Model") and (temp2 ~= script.Parent) and (temp2.Name ~= "Enemy") then
			temp = temp2:findFirstChild("Torso")
			human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
				if (temp.Position - pos).magnitude < dist then
					torso = temp
					dist = (temp.Position - pos).magnitude
				end
			end
		end
	end
	return torso
end
--wait(math.random(0,5)/10)
while true do
	wait(0.5)
	local target = findNearestTorso(script.Parent.Torso.Position)
	if target ~= nil then
		identifier = Instance.new("Part")
		identifier.Anchored = true
		identifier.CanCollide = false
		identifier.Transparency = 1
		identifier.Parent = script
		script.Parent.Humanoid:MoveTo(target.Position, target)
		script.Parent.Humanoid.Part = nil
	end
	
end

I also tried putting a "speed < 10 and speed > 0" in place of speed < 2 and #script.Parent.follow:GetChildren() > 0, but then the npc won't jump if it isn't moving, which can be the case if a player uses a higher point correctly.