http://bugs.winehq.org/show_bug.cgi?id=12302
--- Comment #4 from Mikko Korkalo mikko@korkalo.fi 2008-03-31 14:46:30 --- This seems to be entirely seasonal. Sometimes I can play 5 hours without noticeable problems, and sometimes I get 2 hours of BAD lag. When this occurs, there is a thread in lotroclient.exe which is running at 100% cpu, apparently generating packets.
I can get a backtrace if required.