My WordPress website is reasonably optimized, but I知 wondering whether changing hosting providers would improve its loading times.

I知 looking at hostpro.com and a couple of alternatives. Their shared hosting is one of the options I知 considering, although I know that performance depends on more than just the provider.

For those who have switched shared hosting companies, did you notice a real improvement in TTFB and page loading times? Or was optimizing caching and plugins a much bigger factor?