Limited resources for rendering pages
Rendering pages costs a lot of server resources, so search engines can only allocate a small amount of its resources to rendering web pages. This means you shouldn’t be surprised it can take search engines several days, or even weeks, to index your freshly published content. For comparison: with little effort you can have regular HTML pages indexed in a few hours.
Content that’s not indexed doesn’t rank
It’s important to have your content indexed quickly because if search engines haven’t indexed your content, it won’t rank. Until your content is indexed, you’ll get zero traffic from it.
And when you’re making updates to the content over time, again it’ll take search engines time to process those changes.
Discovering content is slow and inefficient
On top of that, links to other content won’t be crawled either until search engines have rendered your page. Only then they’ll be able to learn about those links, and queue them for crawling. And guess what? Search engines will crawl the content that’s linked and again find that it requires rendering by the indexing process so it’s passed on to the indexer.
As you can see, this is a very slow and inefficient process. And as a result of this, it hurts your SEO performance.
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