I am getting massive latency spikes with the DNS Resolver. It usually occurs right after bootup or after I restart the DNS Resolver service and try to search the web. Switching to the DNS Forwarder fixes my issues. The issues only occur when I am searching the web and the latency will spike 1-3k for 10-20 seconds. If I restart the DNS Resolver service while the issue is occuring my latency will immediately go back to normal. I should also say that I am brand new to pfsense.
Odd issues, look in the logs for errors.