[Web Performance] How to improve this issue

Hi everyone,

I’ve got an issue with this when testing my site on PageSpeed,

It seems Webflow uploaded something but I couldn’t find out what it was so I could do something to optimize this to reduce this 439ms loading.

Thanks in advance. Have a nice day.

These are system files, they are not accessible.
You can try working on other things for speed optimization like optimizing images, Fixing render blocking , Implementing lazy loading, that all should give you a good speed boost.