Use Cookie-Free Domains

FVM doesn’t generate any cookies.
If you have cookies on static resources, it depends on your server setup.
Usually, the impact of cookies is irrelevant, so might as well ignore it.

Looking at your report, your cookies come from cloudflare, hence you cannot disable them.
https://support.cloudflare.com/hc/en-us/articles/200169506-Can-I-disable-Cloudflare-cookies-

But I do suggest disabling cloudflare rocket, as it makes the site slower most of the time and adds an extra javascript file to your site.

Hi Raul,

Thanks for your advice.

Yes, I did notice that Cloudflare Rocket Loader does add an extra JavaScript file, and might possibly add to the load time. However, it does start painting faster so I suppose it is better for the user even if the benchmark metrics would say otherwise.

People rightly say that a fast load time is more important than meaningless A+ scores, but you could also say that a fast paint time is even more important because it is what the user sees in the real world.

If your site paints first, maybe it’s fine.

My experience so far with rocket loader… is that it adds a visible delay on mobile devices, due to the javascript processing time needed to decide on what to do.
Low end or mid range devices, may struggle if your site is javascript heavy, hence I usually disable that right away when I do speed optimization.

You can look at the loading time on gtmetrix as well, for hints.
If it doesn’t add more than 1 second, it should be fine.