I typically box 6 toons and maintain 500-600ms lag (in japan) on a sturdy system that has fairly optimized setup with global loads and such, regardless of events I usually can play even with this lag. As soon as I hit NK I get 700-900ms lag on most boxes, 1-3 crash on zone in and need to be reloaded. I soldiered through it and managed to farm up a few augs in the wee hours of the morning. But its gotten far worse in the last day or two, so that it takes 2-3 attempts/relogs to get all 6 of my toons into the zone, and usually at least 1 or 2 of my toons will get the 0% mob bug so that only the non bugged ones are able to loot. With some patience its playable, but very frustrating to only be able to use half my group the majority of the time as the others are waiting for mobs that have already died and been looted to stop being visible on screen at 0%.
I'm not sure if this is related or not. But I managed to get through halloween ghoulies on all chars (a masochistic experience), and while fighting the raid bosses I had my entire group crash and get booted to desktop, 3 times. Twice on T6 (one attempt he was at 4% when this happened)Considering how much time was associated with each of those attempts, I found this very....frustrating. I know there is an ae associated with this fight that has some distance component and etc, but this script seems like it could use some attention as well.
I had hoped my painful and eyegougingwithspoon experiences associated with the halloween event were unique, but it seems I am not alone. I am happy to help with debugging or any other info, and I hope my information can be of use.
-Pyro