If we are talking about opening big files - Sublime times faster than VSC and miles faster than Code, which still fails at files bigger then 10mb often.
I'm using VCS for some time now (and was at the time of the previous comment), but it's still slow when compared. They did a great job and left Atom (I ment Atom when I said Code, lol) behind, but there is still a huge room for improvement.
I'm not sure if this addresses files bigger than 10mb though.