hashing MS Office 2010 so slow

[tea-er]

Dear all,

I am hashing MS Office 2010 excel file and Speed.Dev.#1.....: 1272 H/s.
When I hashing md5 is Speed.Dev.#1.....: 10472.2 kH/s

Is this correct speed of office hashing?
and how to speed up to hashing office document?

GPU is Intel Corporation HD Graphics 530 and commandline is
hashcat --force -a 3 -m 0 xxx.hash ?d?d?d?d?d?d?d?d?d?d?d

Thanks a lot!