Comments from known VC++ devs in the linked Reddit thread[1] suggest there may be more to it than that, but they haven&#x27;t followed up with confirmation either way yet.<p>[1] <a href="https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;cpp&#x2F;comments&#x2F;4hoyzr&#x2F;msvc_mutex_is_slower_than_you_might_expect&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;cpp&#x2F;comments&#x2F;4hoyzr&#x2F;msvc_mutex_is_s...</a>