DNS Forwarder vs DNS Resolver pfSense 2.2

[Paul47]

I found the answer to the "exposure" question here:
https://forum.pfsense.org/index.php?topic=90557.msg500907#msg500907

[Jamerson]

i am using my domain controller to resolve the dns request . and pfsense using my domain controller as dns to resolve the request .
using the dns forwarder and dns resolver in pfsense gonna speed things up ?
thank you