This is bullstuff; The only thing a new DNS should change is ping.
Not even that
All DNS is responsible for is resolving a host name to an IP address, once that's done, DNS isn't touched.
It'll make a difference for web browsing (if a few ms really matters for that) because you're making a bunch of independent connections (assuming the browser isn't caching resolutions), but for gaming, where you only need to resolve once for the initial connection (or zero times in the case of games with server browsers where everything is already IPs, like blockland) it won't make any difference