Laggy realm

Hi. I have a realm with 2200+ members. And my realm has been laggy for months. Mobs move slow. Slow chunk loading. My members couldn't eat because of the lag. Even crops and grass doesn't grow. I keep trying to fix it but all failed. I even tryed reseting It. I hope mojang fix this. Realm data: About 4gb. I have video proof to.

 

 

Much appreciated.

 

~American Mappin