Since I were told to create a new thread for analyzing;
I’ve experienced some pretty massive lag spikes during our raid nights within the new raid.
On Wednesday I luckily only had lag spikes during the first boss, and otherwise it was smooth.
Tonight (Sunday) I had lag spikes throughout the evening, which makes progressing and learning the Anduin fight very frustrating.
I don’t have much lag spikes otherwise; Only within the raid.
Not sure if it’s related only to anduin or not.
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| WinMTR statistics |
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
The WinMTR results look perfectly alright, so if those were captured during the time ingame latency was higher than expected the root cause for said latency either didn’t occur on the route between the computer and the server or within a network area the test couldn’t map (e.g., maybe in IPv6 range, or within the router itself).
That all said, latency spikes that seem to only occur within one specific area but don’t affect everyone else within the area equally are rather often the result of “log-crawler” addons that go off the rails during an encounter. It’d definitely be worth to giving this a try while no addons are installed (and their cached data has been cleared as well), just to see if it makes any difference at all. 
The spikes and packet losses between ae1-br01 and 137.221.65.75 ain’t of any concern then?
I suppose I could try disabling every addon if I see the same problems next time we raid and I see those issues, kinda hope it’s not the case as I would assume I’ll lose any user settings within the few addons I have if I need to clear cached data
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The two as57976.net entries happen to be firewalls that deliberately throttle and discard certain types of data packets that are commonly used for DDoS-style attacks, including the type used by the WinMTR test (type ICMP_ECHO, aka “ping”). Actual game data traffic passes unhindered there. 
Well during yesterday’s raid night I didn’t experience any latency issues;
I did however disable a bunch of addons beforehand, and gradually added some back in during the night.
Guessing the addon “Zereth Mortis Puzzle Helper” might have been the culprit, unless it was simulationcraft.
Thanks for the help tho Veadsarias ^^
ok I’ll just use my own thread again;
So, tonight again I’ve experienced lag spikes within Sepulcher of the first ones again.
I disabled all my addons, even deleted the WTF and it didn’t have any effects at all.
Some other guildmates also faced this issue so it’s not exclusively me…
so, big load on the servers tonight or what?
Apologies for the late reply - but no, nothing special happened server-side at the time this was reported. Trouble with the instance-server would also generally have some pretty drastic impact on everyone in the zone, not just select individuals.
Odds are, there may have been a commonality between the involved players that caused them all to be affected. Point of note here: disabling addons doesn’t stop them from talking to each other, which is one of the ways how addons used by player A can actually make things worse for player B (who potentially doesn’t even actively use said addon). Actual deletion and purging of their cached data would be required to make sure there is no residual effect in place.
Had massive issues tonight as well, and as you advised I removed the addons and WTF folder.
It didn’t really make any difference unfortunately 
I’m a bit lost as to what it could be at this point. Have done WinMTR, moved addons and wtf out of the WoW directory.
Tried ticking off “Optimize network for speed” just in case; Nothing.
Don’t have IPv6 on, nor advanced combat logging.
Still the world latency stays up at like +300-500ms
The weird thing is, it doesn’t happen every raid night either…
Of course, I’ve closed most background applications as possible, only having B.net, WoW and discord running
so would it be related to other player’s addons sending traffic my way then or?
It’s incredibly frustrating as it actively interferes with my ability to do what I enjoy the most in WoW; Raiding with my guild(s)
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I am having exactly the same issues and have yet to find a thread where this problem is solved.
I’m only getting these lags in raid and rarely in dungeons. After 9.2 i’ve been having these lags and now i am at a point where i’ve ruled out everything on my computer(Updating drivers, Re installing game, Deleting addons and cache, cleaning the computer).
I’m hoping this thread gets resolved quickly so i can try the solution myself.
Let’s collect some data here then, to see if there commonalities between the affected players that may explain what is going on.
Specifically, the following would be interesting:
- Country of residence
- ISP being used
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WinMTR results (ideally recorded while encountering issues)
Right, so Sunday I experienced nothing.
Today however I had some spikes, but not unplayable at least.
Country of Residence: Norway
ISP being used: NEAS MR fiber internet
WinMTR results for tonight;
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| WinMTR statistics |
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
I also did a winMTR over 1 hour doing some leveling Saturday (21:30-22:30) for a baseline;
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| WinMTR statistics |
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
It’s just weird that it doesn’t happen every night I do raiding, there seems to be no pattern to whether I have a smooth experience, or having lag spikes. the winMTR results doesn’t look apart either…
Thursday last week was just horrendous, so bad I quit out early. I didn’t log any winMTR at that day however, was mainly testing stuff you’ve already suggested Veadsarias
Edit; Tacking on another WinMTR from tonight as well as there was another night with spikes:
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| WinMTR statistics |
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
Telzi, are you still having issues? Fellow Norwegian here, I found this trough google as I have an issue somewhat relatable to this. Any chance you could add me on discord?
BatteryChris#8072
Hey there Batterychris, I was away for a while.
I haven’t experienced the same issues since that last time I posted winMTR, so the issue has been fixed in the background somehow, or passed?
guessing it might be due to less people actively raiding already, or something blizz did in the background (if anything?)
We have seen a low, but somewhat constant, amount of reports for this over the past few weeks. The common denominator seems to be the region/ISP used - so best we can tell, that is where the issue would originate from.
I’d definitely recommend for anyone who is affected to have a chat with the ISPs network/peering support team.
YEP, this is the reason I asked Telzi. I don’t even play WoW anymore, but I’m having horrible packet loss / lag during afternoons. The common denominator here is
" ae1.cr2.prinsg39.as2116 . net "
This server and other in that place is when my packetloss starts.
It’s the server the ISP rents their line from, which makes it hard to fix.