Quote Originally Posted by 'Alienenduro',index.php?page=Thread&postID=121926# post121926
I have 4gm ram and i had the same issue. when i was running around questing everything was fine but as soon as i entered the likes of Stormwind everything started to stutter. I got around this by opening task manager then going to processes, right clicking each of the wow processes and selecting affinity, from here i was able to set all the running wows (5 of them) to use all 4 processors. after doing this all copies ran like a single instance of the game would. i guess this will only really work like this if you have a quad core. give it a try if you do.
I've already configured Keyclone to set the affinity of different wows to different cores. Although with 5 wows and 'only' a quad core, two instances will need to share 1 core.
I get the impression (but I'm not 100% certain) that the problem is one of memory / paging, rather than CPU though.