I have a multilingual site where every translated page belongs to a collection (_en, _es, _ja…) I use the option
output: true to generate HTML from collections’ documents. Every collection has far now 140 documents.
Also I have a shared image folder. Every time I run jekyll in watch mode and modify an image ALL the collections are rendered, which takes nearly over a minute, even when their content has not changed.
I suspect this is the expected behavior, maybe I’m wrongly using collections instead of static pages. I wonder if there is a way to prevent Jekyll from render collections’ documents when I modify other parts in the project.