You mean that out of the box it is visibly slower?
Hard to believe.
Yeas, contact the vendor ASAP.
I say vendor, because in many places you get more immediate results if you complain to the vendor. The vendor may have a refund or return policy.
Even if you really love the machine, your love is in vain if the machine does not deliver the promise. It is not your job to do Q.C. for the company.