Yes. Largest Contentful Paint (LCP) does.
When your page is being built it is painted in real-time onto the screen of the visitor’s web browser. If you have large images on your page, if there is a lot of whiteness caused by the lack of content or if your site is very slow to load, you will get a larger LCP percentage.
This can be interpreted as slower loading overall for the webpage and search engines look at every aspect of your page when indexing.