Google (GSC) has flagged almost half of my content as taking longer than 2.5 seconds to LCP on mobile. I've spent several days trying to optimize my site to reduce the time it takes, but I can't get the time consistently to less than 2.6 seconds for mobile.
I'm running Wordpress, with a very lightweight theme, on a shared environment. I have less than 1000 users a day, so I don't think it's a hardware issue per se. I've tested turning off every single plugin leaving only a bare bones WP site and still can't get it to load faster.
Is it realistic to think that a WP site will ever load faster than 2.6 seconds on a shared hosting plan?
Edit Additional testing
To eliminate the possibility of the DOM being too complicated, I've tested with a single paragraph block
<p> with less than 20 words and a full width layout so we don't have extra columns. Even under these conditions, the fastest LCP time is 2.4-2.6 seconds.