I think you're overreaching by blaming Wordpress. By far, the bulk of the time loading your site is TTFB or Time Till First Byte for your website. That could

I think you're overreaching by blaming Wordpress. By far, the bulk of the time loading your site is TTFB or Time Till First Byte for your website. That could mean that your hosting company is extremely slow, your theme is doing something very awkward, you have a million plugins running, or something along those lines.