For me, it depends on how interesting the plot is, but it can also be based on the quality of the translation/the effort put in. I have waited for updates on mangas that need to be translated only to get one chapter after waiting for over a year (which is fine by me lolol). Ultimately, I can wait forever if I know that the author/translator is still motivated to update.
If a chapter takes too long to update, people may lose interest. If chapters are uploaded too frequently, people may feel overwhelmed and not read at all. The ideal situation is around 1 chapter every 1~2 weeks, but that doesn't work out at times.
Many people complain about wanting faster updates on manga/manhua/manwha/webcomics/etc., but where do you personally draw the line? What do you think the ideal update schedule should be?