Setup IIS to use the Remote Share.

Set the folder path to \

Start > Inetmgr > Website > Right Click, Properties > Advanced Setting.

Setup the Application Pool to use the Domain Account

Click Application Pools

Type in the DomainUsername, and passwords.

When completed you’ll see the AD domain account listed.

Perform the same procedure on additional servers. 

On each site, adjust the Anonymous Authentication Module to inherit the application pool identify

Start > Inetmgr > SiteName > IIS section > Authentication Modules > Anonymous Authentication Module > Right right click, edit.

*Note*. We recommend you evaluate your potential load using remote content. Here is an article that has registry entries you would implement to prevent SMB (server message block) errors. SMB Registry keys.