Smush Pro is making tons of HTTP API requests. Referring to the attachments, it's making more than 60 API requests, many of which takes more than 1s. In total, it's causing more than 60s of slow down, which is very bad. See https://1drv.ms/f/s!AoJO8z-oV8zeoYoPNR-KApb9OBBQ4w
I've used Smush Pro on more than 100 websites, and this is the 1st time I experience this issue. Any idea why?