Bear is having a weird slomotion run while chasing you

Help and Feedback Scripting Support
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#1

Hello robloxians, i have come opon a bug where when my bear’npc’ is chasing you. it runs normal and then when out of nowhere it just turns to slomotion.
here is a video:

robloxapp-20230411-2119332.wmv (2.1 MB)
and here is the code ‘for the chasing’:

local targetDistance = script:GetAttribute("TargetDistance")
local stopDistance = script:GetAttribute("StopDistance")
local damage = script:GetAttribute("Damage")
local attackDistance = script:GetAttribute("AttackDistance")
local attackWait = script:GetAttribute("AttackWait")
local lastAttack = tick()

function findNearestPlayer()
	local playerList = Players:GetPlayers()
	
	local nearestPlayer = nil
	local distance = nil
	local direction = nil
	
	for _, player in pairs(playerList) do
		local character = player.Character
		if character then
			local distanceVector = (player.Character.HumanoidRootPart.Position - root.Position)
			if not nearestPlayer then
				nearestPlayer = player
				distance = distanceVector.Magnitude
				direction = distanceVector.Unit
			elseif distanceVector.Magnitude < distance then
				nearestPlayer = player
				distance = distanceVector.Magnitude
				direction = distanceVector.Unit
			end	
		end
	end
	
	return nearestPlayer, distance, direction
end

RunService.Heartbeat:Connect(function()
	local nearestPlayer, distance, direction = findNearestPlayer()
	if nearestPlayer then
		if distance <= targetDistance and distance >= stopDistance then
			humanoid:Move(direction)
		else
			humanoid:Move(Vector3.new())
		end
		
		if distance <= attackDistance and tick() - lastAttack >= attackWait then
			lastAttack = tick()
			nearestPlayer.Character.Humanoid.Health -= damage
		end
	end
end)