Performance TTFB is low connection

Hello, everyone. I need a help, as I have already helped me the last times I needed, I decided to come back with this doubt that I found no answer in the forums. The site here of the company is with a great ttfb, but only in the home. For example, on the page the TTFB is in 3.432s and the home is down from 500ms. I’d like a little help from you guys to understand what’s going on. We own the Pro plan.