Board Thread:Versus Debates/@comment-31810758-20170610230007/@comment-30426414-20170614150615

Killer723 wrote: @namikaze Chapter 657 page 10.

Also wiki link http://naruto.wikia.com/wiki/Mangeky%C5%8D_Sharingan but i can save you from searching it and copy paste it here.

the straight tomoe (直巴, choku tomoe) of Madara's and Sasuke's Mangekyō Sharingan[5] grants them fluidity in their movements when fighting.[6] Madara was able to sense this form and later deduced that he and Sasuke must be connected by more than blood.

It gives them fluidity in their movements, that doesn't mean it makes them faster.