I've decided to post what I have tried so far to fix laggy ICC25's and random disconnects that make the game almost unplayable for me, I'm sure a few other people have the same kind of issue's so hopefully this thread will help others.
evga 780i motherboard
Q9400 CPU @ 3.4ghz
8GB Corsair DDR2 pc-8500
nvidia 9800gtx+ 512mb
To begin with months ago we hit festergut in icc and my pc hit 1fps during 90% of the encounter, this carried on to rotface and then putricide with it eventually starting to affect saurfang and gunship until I couldn't even attempt marrowgar without dropping to single digit framerates and 1700ms.
I'm using wow tunnels and generally raid with 190-240ms and this for me is really really good, without tunnels I would have dc'd on the boss pull guaranteed. I was getting a solid 190-200ms ping all the way to plague wing, we pull festergut or whatever boss and i have 1700ms within seconds and it won't drop down until i reconnect to the tunnel, but up until plague wing the tunnel was fine. ??? weird.
Syl would get ~1700ms at the same time but my pc would always drop while hers stayed connected with high latency.
Things I've tried:
Fresh Reinstall of wow - downloaded the installer from bliz site and did the full 7gb download and reinstall, this by far had the best impact on framerates out of anything I tried, festergut wont drop below 45fps anymore and it was the worst for me before.
Deleted and re downloaded and setup from scratch every single addon i had, and steered clear of crap I didnt use or didnt really need. This helped a little with latency dropping avg 10ms, although how much of an affect it actually has is hard to gauge, so I used spamalyzer to check all incoming/outgoing addon comms, and with Syl's help managed to drop everything outgoing except for libhealcomm and pitbull keeping my addon chatter to a minimum.
I noticed the fog/gassy effects that got introduced with the new 5mans before ICC and with Festerguts blight etc would absolutely kill my fps, even in 5mans. If my camera happened to swivel through one of the gas vents in the wall in the 5mans it would chug to 1fps until my camera moved out of the gas. I tested this a few times and it was def the culprit. Reinstalling nvidia drivers basically had no effect, new versions and rolling back to old versions that i had used in uld that were fine didnt help either. reinstalling wow fixed this issue for me.
Some addon settings that might help
recount: disable lazy sync, do /recount sync and make sure it says disabled.
combat log: turn it off completely so it logs absolutely nothing (you can use recount to see what killed you and how much dmg you took etc)
grid: for DPS if you use this get rid of everything except for the core grid files and the raid icons addon so you can see marked targets easily, everything else is not required for dps, i.e. mana bars, corner text etc.
combat text addon: turn off everything, i still leave outgoing dmg on but that's it it doesnt show heals or other peoples dmg or procs or cooldowns or anything, just dmg, you could even drop your combat text mod all together and go back to blizz default one.
everything else you wouldn't need during a raid/combat, gearscore, auctioneer, gear bonus scanners, atlasloot etc turn it off.
for anything else you might use check that it doesn't try to communicate with other people addons, spamalyzer will show you whats happening.
Wow is now generally much more playable although i still think TPG is a factor in lag and disconnects, running constant pings to the tunnel, the wow server and an aussie server like optusnet or telstra show 1 dropped packet every few minutes which over the course of a boss fight equates to less than 1% packet loss although the latency to the tunnel and the aussie server will sometimes skyrocket for a second or two and this usually coincides with a DC.
The strange thing is at least one raid night per week i will have an awesome connection, no lag, no dc's all fights are sweet (i.e. yesterday) yet on Sunday it's likely i'll have 1700ms and get dc'd on blood queen etc, although nothing has changed on my end, everything is still identical to when i played on wednesday and it was fine yet on Sunday it's unplayable. How many other people are on TPG and get dc'd frequently in icc? I know of at least 3 of us, just wanting to try and get a general idea if it is my isp or not.
Hope this thread helps some people.
WoW: Kirosan - 85 Mage | Reiiku - 80 Priest | Sensha - 85 Warrior | Risaka - 85 Shaman
"Help me, I broke apart my insides"