[acdha]

In this case, it’s simply putting a mountain of code into the critical path. If you have to load 30MB before the page works, it’s just not going to be a good experience. You can try to handle and retry errors but it’s better not to get into that situation in the first place.

[withinboredom]

That's what I mean. I've seen async loaders that wait 5s and don't see the file, then request it again. Before you know it, you're downloading 50 files of the same file or making 100 api requests to the same api endpoint.