Integrations (FB Pixel, Google Optimize) slowing down site too much

I have a client whos site with integrations scores a 75 speed test and without integrations in the low 90s. Is there a way to make these integrations not slow the site down so much?
They are using: Google Universal Analytics Tracking ID, Google Optimize, Facebook pixel.

Here is the site: https://try.hungrybark.com/
Here is the read only: https://preview.webflow.com/preview/sales-our-story-178e2d5439ff307a2b6fcaa?utm_medium=preview_link&utm_source=designer&utm_content=sales-our-story-178e2d5439ff307a2b6fcaa&preview=e789dc4f7a769cbab0fd148398228673&workflow=preview