It can’t be fixed by better tech or server coding, it needs to be tackled by content designers in the future by not encouraging mass brawls and/or somehow reducing instruction calls but without simplifying classes too much.
People these days go for maximum attacks per minute which when combined with all the passive effects which need to be shared across clients leads to a massive instruction count and thus lag.
I just did the world quests on Darkshore on my paladin. The lag was so bad that sometimes I had to use multiple abilties, otherwise I didn’t generate any holy power points. I have a ping of 33 (and even a lag-game like PUBG runs smoothly).
It wasn’t this bad in Legion, though. Not even in Argus, which of course was the focal point of Legion for almost 12 months.
Something happened when they launched BFA, and my guess is that it has to do with War Mode and sharding, but I have no idea.
At the US forums they’ve admitted that something is seriously wrong with the game (you hear that @Hagut? 
), https://us.forums.blizzard.com/en/wow/t/ability-loot-lag-on-oceanic-servers-despite-normal-latency/16791/1802
Right, so that’s official confirmation that there is a serious server lag issue then, that they are having to develop a major fix for. So it must be a fundamental problem to some aspect of the game.
From US WOW Forums
[Drakuloth]
[Customer Support]
Hey again folks,
The feedback has been forwarded back to development. Thanks for getting that confirmation for us. I’m glad some of you are seeing some improvement.
We still don’t consider the issue resolved, and we’re making incremental improvements as time goes on. There’s a long term fix in the works but it’s pretty major and will take some time to get together. Once we get an ETA on that or hear that it’s gone in, one of us will let you know.
As always, you’re welcome to continue reporting the issues on this thread. We’re still watching.
I don’t understand how US said this 7 days ago, yet Hagut say’s there is no issue.
Why are you trying to sweep this under the carpet? Fix the game! REEE
I’m guessing it first appeared on US servers and they released some patch there maybe after which they thought everything was fixed but now it’s everywhere. I recently got little patch downloaded on launcher but still after 1 hour game started to lag like before. All I can think of is not to play until they fix it if not, bye WoW 
Probably shouldn’t ask people to put pathpings and tracerts in public forums. Both logs contain internet protocols (IP) that fall under ‘personal data’ according to the European General Data Regulation Protection (GDPR). As such, it is your responsibility to keep it safe - something that is difficult to do when you ask your clients to post it in a public forum.
I keep being concerned about that, the MSInfo reports give out a lot of potentially sensitive data too, should never be posted to public forums.
Nothing in a regular traceroute should be identifiable as personal data, your public IP isn’t listed on a traceroute or pathping. The reverse traceroute you can take via Looking Glass (which traces from Blizzard to you) does contain your IP but I’ve never seen them ask people to post that. IPs of other nodes wouldn’t fall under personal data for GDPR purposes.
Err, unless you are running the traceroute or pathping from somewhere else, the first hop is your machine, the second will be your gateway, dependent on how your home connection is provided. If using a static IP, rather than NAT, it’ll be the first hop that is your public IP.
I think in all the years I’ve posted on the forum I’ve only seen one person who had their public IP listed and who knows how their network was configured.
But if it’s against the GDPR then that’s a problem for Blizzard as a whole, support are just being asked to request information 
The ISP gateway is location data and will tell you in what vicinity that I reside. That, combined with my name, is obviously personal data.
The patch previous to the 21.12 patch, made it better.
The 21.12 patch made it worse again.
This is clearly a serverside related issue.
Or maybe… maybe a DX12 client side issue.
But you’d have to see input lag everywhere and not just in 3 places like pretty much everyone reports. (kul tiras islands essentially)
Still either way it explains the “requires a mayor patch” comment… sounds really sloppy though if this wasnt picked up right away before implementing 8.1… sounds almost like a spiteful action because people didnt respond too well after the blizzcon fail.
It’s not DX12 issue. When the patch came i was still on DX11 with all the same lag. I then switched to DX12 and nothing changed. Btw just today checked my connection in Speedtest, 125/19 mbit/s (down/up), 15 ping. And that’s with 2G wlan to my nearby router.
Same here alot of lag spikes
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| 10.0.0.138 - 0 | 281 | 281 | 0 | 0 | 27 | 0 |
| 10.44.0.1 - 1 | 278 | 277 | 6 | 8 | 18 | 7 |
| pa1-84-91-0-33.netvisao.pt - 0 | 282 | 282 | 14 | 17 | 88 | 18 |
| te0-0-0-23.rcr21.lis01.atlas. cogentco. com - 0 | 282 | 282 | 14 | 17 | 92 | 18 |
| be2498.rcr21.opo01.atlas.cogentco. com - 1 | 278 | 277 | 19 | 21 | 39 | 23 |
| be3305.ccr52.bio02.atlas.cogentco. com - 0 | 281 | 281 | 33 | 36 | 85 | 37 |
| be3324.ccr42.par01.atlas.cogentco. com - 0 | 281 | 281 | 46 | 48 | 100 | 48 |
| be3626.rcr21.par05.atlas.cogentco. com - 0 | 281 | 281 | 45 | 49 | 132 | 45 |
| te0-0-2-1.nr11.b034382-0.par05.atlas.cogentco. com - 0 | 281 | 281 | 47 | 50 | 115 | 48 |
| blizzard.demarc.cogentco. com - 1 | 278 | 277 | 0 | 49 | 73 | 49 |
| ae1-br02-eqpa4.as57976. net - 1 | 278 | 277 | 0 | 66 | 261 | 56 |
| et-0-0-3-br02-eqam1.as57976. net - 2 | 253 | 248 | 0 | 145 | 4635 | 59 |
| et-0-0-67-pe02-eqam1.as57976. net - 1 | 278 | 277 | 0 | 57 | 79 | 55 |
| 137.221.66.45 - 1 | 278 | 277 | 0 | 58 | 74 | 58 |
| 185.60.112.158 - 1 | 278 | 277 | 0 | 58 | 79 | 57 |
| ________________________________________________ | ______ | ______ | ______ | ______ | ______ | ______ |
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
No, this isnt about actual lag, thats a different problem.
We’re talking no lag, but it lags.
So ping and MS is all low and fine, but you still get a delay in what you’re doing ingame.
So your problem is a different problem that doesnt belong in this thread.
(not to be snippy, but to keep it clean)
Yes you’re right in hindsight.
This is something server side related, as admitted on the US forums.
They better fix this real fast though, there are more then a few moments its downright unplayable.
Seriously? You do not know? Well then, I hope that I will open your eyes WPvP 40x40+ lags and ppl disconect Look at the date of the post. This is a very big problem, but you don’t see it or don’t want to see it !!!
This man talks about a serious problem!!! Look at the video WPvP 40x40+ lags and ppl disconect ALL ppl have this problem!
Tracing route to 185.60.112.159 over a maximum of 30 hops
3 51 ms 50 ms 50 ms 80.249.208.83
4 49 ms 50 ms 50 ms [137.221.78.35]
5 50 ms 50 ms 50 ms [137.221.78.73]
6 * * * Request timed out.
Meanwhile if u trace the other server u go pass the same point
Tracing route to 185.60.112.157 over a maximum of 30 hops
3 50 ms 50 ms 50 ms 80.249.208.83
4 50 ms 49 ms 49 ms [137.221.78.33]
5 50 ms 50 ms 50 ms [137.221.78.69]
6 50 ms 50 ms 51 ms 185.60.112.157