This has been brought up a few times in the several posts about Hunts. The issue is, most people don't use public test realms as test realms. They use it as either a patch preview or as a place to figure out all the boss strategies ahead of time so they don't have to do so after release. On a test realm you may have had enough people on at one time to see the issues with the Hunt, but likely most people would have done it once to finish their weekly mark and moved on. The HP issues we are seeing are related to the people farming marks over and over for allied seals. This is not something most people are likely going to try on a test realm as all that currency goes away.