Technically, there already is: with advanced options enabled, there's a button in the settings modal next to the preload amount that you can press to start preloading that entire chapter, assuming you're also logged in. The reason there's no option to preload entire chapters by default is to prevent its overuse, especially with particularly long chapters. Some have page counts in the hundreds.@Elli posted:
Pertaining long strip, there is no way of getting that back? I just read a 37 page chapter that continuously had pages deep into the chapter that took a long time or just refused to load.
Yeah, I actually fucked something up. I intentionally induced a random 0-3 seconds lag to every image for testing purposes but I forgot to remove it.