AnimeFanKa and BoomerZ are both right.
Shorter updates more often are better for visibility (and so will help you get readers). More pages mean that if somebody goes on an archive binge and reads them all, you'll be more visible too (will explain this below).
Updates that have enough going on that people can discuss it in the comments and feel like new episodes are worth jumping on will help you keep readers (and will eventually help with visibility due to more likes).
So ideally, you should aim for a nice balance of regular updates (so make them short enough you can get content out every week or two), but also trying to make sure there's always something like a joke, moment of intense drama, something sexy, plot reveal or something cool or spectacular that will make somebody feel like leaving a comment.
The Tapas algorithm for the "popular" rankings is mostly based on getting plenty of likes in a short space of time (like 2-3 days), so to be visible as much as possible, the optimal way is regular updates that can accumulate 30+ likes so you can get seen in the popular rankings on a regular basis, and also to have plenty of pages for archive "like-bombers" to give you boosts.