findOne vs DQL

doctrine-perf.php

<?php
/**
 * Class TempRepository
 */
class TempRepository extends EntityRepository
{
    /**
     * Find a temp entity using the temps ID
     *
     * @throws NoResultException|NonUniqueResultException
     * @param $tempID
     * @return mixed
     */
    public function findOneByTempID($tempID)
    {
        // debugger
        // \Doctrine\Common\Util\Debug::dump($result);

        // option 1: loads in 1.2 - 900ms on average
        $qb = $this->createQueryBuilder('a');

        $qb->select(array('t'))
            ->from($this->getEntityName(), 't')
            ->where('t.tempID = :tempID')
            ->setParameter('tempID', $tempID);

        $result = $qb->getQuery()->getSingleResult();

        return $result;

        // option 2: loads in 200 - 500ms on average
        return $this->findOneBy(['tempID' => $tempID]);
        
        // option 3: loads in 300 - 800ms
        /** @var Query $query */
        $query = $em->createQuery("
            SELECT t FROM App\Entities\Temps\Temp t
             where t.tempID = :tempID
        ");

        $query->setParameter('tempID', $tempID);

        return $temp = $query->getSingleResult();
        
    }
}