Page being assembled before handlebars can finish iterating over large dataset

[Josh68]

(Moved from assemble repo, per maintainer request)

This may be a strictly handlebars issue, not sure, but I've just spent a lot of time debugging the rendering of an iterated block (each) that was preventing the portion of my page below that block from being rendered. I kept inspecting the data (valid JSON) for issues until I realized it just came down to the number of iterations that was the issue. If I truncate my JSON in just the right place, I can see more of the page render, and when I get it just right, all of the page renders, but then of course I'm missing a large part of my data set. Is there any known workaround for this issue in Assemble (note, I'm using grunt-assemble), to delay the assembly of pages until handlebars has iterated over all data? Thanks.