Not even speedrun, just be consistent. It's getting really annoying, how some artists are clearly playing with "overworked mangaka" card, so their publisher/editor don't push them too hard, but come on - month to create 10 pages is... Sometimes I think that recently artists (all kind of artists, not only mangakas) are forgetting, that creating is their job, and to deliver product (in this case 1 full chapter) in a set amount of time is what they're getting paid for. I can't imagine how my boss would react, if I wouldn't give him solution to a problem/give him half-assed solution, without any decent explanation... And I myself am working somehow in "creativity industry", so it's not like I don't understand what does it mean to have constantly deadline over your head.