GTranslate page optimization issue

Hi,

Upon the initial loading of my website (with a cleared cache) at https://forwardmarketing.nl, I notice that all language flags, including the disabled ones, are displayed vertically for a few seconds before the complete website loads. I am using the GTranslate plugin and when I disable the Litespeed Cache plugin it works fine, I tried excluding flags.js but this doesn’t work. Could you please assist me with this issue?

The page I need help with: [log in to see the link]