Robert Mull of Warhammer Online Dev team at Mythic Entertainment has put up a statement on the Herald. If you have been noticing a significant drop in client performance while in some large scale RvR battles, rest assured that they are working on the issue.

The WAR community has expressed concern with overall performance and server stability in Tier 4, particularly during large-scale fortress sieges. We want you to know that we’re listening and dedicated to resolving this issue as quickly as possible. Our Production team has been working hard to resolve this with both server-side fixes to resolve any crashing issues, as well as client-side fixes to improve frame rate and other graphic-related issues that can occur during large battles.

RvR is a core element to Warhammer Online, and we are committed to making it an enjoyable and exciting experience for all of our players. Our ultimate goal is to have our players focused on fighting their opponents and experiencing the thrill of RvR the way it should be. Thank you for your continued support and patience while we work to resolve these issues. We’ll keep you updated on our progress.