For DNS performance the average is probably not the correct measurement stick. It's vulnerable to sudden spikes or timeouts which happen a lot in UDP traffic.

For DNS performance the average is probably not the correct measurement stick. It's vulnerable to sudden spikes or timeouts which happen a lot in UDP traffic. I recommend measuring the median and p0.5, p99.5 and maybe p99.99 values with a lot of data points. That eliminates any packet issues and laves you with the performance you can expect for 50%, 0.5%, 99.5% and 99.99% of your DNS traffic.