I just set up a new DNS server / File Server so that we can share files securely over our network. I have added 2 new computers to the network and I plan to add another 10 machines at least, but the 2 that are set up don't load websites very quickly, and more often than not, the sites don't fully load either. I know it isn't a browser issue because I get the same issues across chrome, firefox, explorer, brave, and edge... all the computers using our internet connection have no issues with speed or loading, only those that are connected to the server.
Troubleshooting a DNS Server settings
Troubleshooting a DNS Server settings