I canāt even run instances because of the frequent freezes. I went through all of my hardware and add-ons. Outside of instances, my latency and FPS are fantastic on a relatively new computer. But if I zone into an instance, itās Freeze City. So itās not just dungeons and raids that are unplayable, but Torghast too.
If I canāt do those things, then . . . . back to being a Sims-playing-housewife for me, I reckon. 
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Iāve found that if Iām listening to youtube (music) on another monitor I get the choppyness. If I pause the video, the issue disappears entirely. If I minimize it, or go to another tab I get significantly less but itās still there.
Disabling hardware acceleration in Firefox fixes it.
Iām guessing that Blizzardās having issues with DX12 and contention/prioritization. In the meantime, making WoW the only thing using the graphics card, or removing hardware acceleration, seems to be a highly effective fix - for me at least.
i9 7980 XE @ 4.2GHZ, 64GB DDR4, Optane 905 primary disk (wow installed there), Win10 20H2, 1080TI x2 in SLI. Latest GeForce drivers.
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Just wanted to say same issue here, itās absurdly annoying, already tried disabling addons or lowering graphics, reinstalling stuff, nothing works. It seems to happen when a lot of stuff is being loaded in ram, such as when you pull a raid boss for the first time, open your map, macros or any other sort of menus, etc. Previously the game ran just fine.
GTX 1050, i5 7th gen, DDR4 RAM and M2 EVO PRO SSD.
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Today, for me in Spires of Ascension was nearly unplayable, Iām having once again massive fps drops moving the camera in certain angles, lowered my graphics settings to (1) and still Iām having the same 30-20s fps drops from constantly (75), people in the dungeon also called that they were lagging maybe was the fps drop.
After the reset this was fixed, Iāve been having this issue since the start of Shadowlands first was only the entrance after the first boss, now is the whole dungeon. First the open map stutter bug, next was western Korthia skybox fps drop and now this again. Whats going on?
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Same here. Iām so glad I found this thread. I tried everything and couldnāt figure it out
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Found a temporary fix in the forums that helped me, hope this helps anyone too with the dungeon and some random fps drops 
Blizz please fix this.
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Something simpleā¦Go to System. Go to Advanced. Under Graphics API - change it to Direct 11 Legacy. See if it helps. I was having choppy graphics in raid and it fixed it.
I have a subpar laptop but iāve never had problems with doing content, even Castle Nathria I had 60 fps. Spires iād have like 40 but was doable. I did the Terragrue boss and I dropped to like 6 fps and thatās obviously unplayable because I cant even rotate or click my screen to move, see where to run etc. Also have problems during world bosses but those arenāt as important, iām just concerned about SoD. Torghast is completely fine for me but i guess raiding is out of the question for me.
I donāt think thatās the case. I guess I could write a fake addon that hogs a big chunk of memory and runs a heavy CPU load on tick to test it for sure.
I think where a lot of people mess up is they forget thereās an āAllā and āPer characterā set of enable/disables for them.
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My issue is when I mouse over things or move abilities around on my action bars, it causes micro stutters.
I have deleted the cache folders, deleted the WTF folders, disabled all addons, switched to DirectX Legacy 11ā¦ nothing gets rid of the issue.
I am beyond frustrated.
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Ive played a few other games without any issues. The only game I am able to duplicate these problems with is a over the top modāed Skyrim that is way beyond WoW. When I move fast I get bottlenecks/stutters on my screen as I wait for everything to load in.
With my meager coding experience that tells me one thing. There is some ājunk in that program trunk.ā Our PCās are racing through a Blizzard mine field while loading everything.
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Anyone figure out a fix? Nothing I try works.
Disable all addons? Still does it.
Mess around with settings? Still does it.
Delete Cache/WTF/Interface folders? Still does it.
Itās to the point I donāt even want to play because the micro stutter lag drives me to annoyance.
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The raid is a struggleā¦once combat starts, it hits super low. We had to do raids without using hero on pull/cdāsā¦
This is on Oceanic servers.
8700k/3080.
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Still awful stuttering since 9.1. I have done everything mentioned here, but like others Itās still pretty unplayable. You can play, but its not enjoyable ect. So much hitching.
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Youāre going to be waiting on Microsoft to hammer out the rest of the kinks in their DWM when using DX12. Itās an issue across the board right now. Thereās a part of the DWM called the multiplane overlay system and that basically got turned all the way on in recent Nvidia drivers and Windows. Thatās why any driver after the 457.XX ones introduced all kinds of bugs for almost all games now. Itās technically been around since around the Windows 8 era, but wasnāt really used. It handles compositing frames to be rendered and handles all the mixed refresh rates, windows and such. Thereās something wrong in the pipeline thatās leading to a lot of issues when using DX12 because it receives different optimizations. I wonāt turn this into a rant about it all though, just know that this really isnāt likely an issue on Blizzardās end.
But yeah, for now, DX11 in WoW is faaaaar smoother than DX12. I switched back to 11 the other night and rarely ever have a hitch ever. The only time it does is when my client suddenly needs to load in dozens of new people at once, like when you phase to fight a world boss in LFG, but that would happen in DX12 as well.
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Yup, DX11 is the fix right now.
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I tried this, both regular 11 and the legacy, the issue is still persisting for me. Itās great that it resolved it for you but I donāt think itās a cure all for everyone.
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Thank you for the input. Now if we could get Blizzard to say something about it. The fact that they havenāt is suspicious. You would think announcing an issue with Microsoft would relieve some pressure on Blizzard, but they havenāt . . . .
Yes I have been having the same issues as well. It was happening just before 9.1 launched, but is even worse now. At the beginning of the expansion it definitely wasnāt like this for me. I did a full UI reset, removed all my add-ons, and it helped a little for a few days but now itās just back to being horrible again. Iāve lowered all my settings, still doesnāt help. I do run it on DX12, have tried running it on 11, but it didnāt help.
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Well I guess technically, Blizzard could try to rewrite their rendering thread around the bugs, but it would take a bit of refactoring work to do. Also, the bug isnāt super widespread because for the most part, most people arenāt running at 8xMSAA, where itās most prevalent.
But then comes the problem of okay, they rewrote the code around the problem, but then Nvidia changes something to combat their problems with Windows and now it breaks WoW again. But wait thereās more! Microsoft makes some changes to fix their problems, that now break some of Nvidiaās fixes, that break some of Blizzardās fixes. See what Iām getting at? Blizzard probably doesnāt want play that whack a mole game.
From a CS standpoint, I doubt Blizzard is going to want to admit that to customers.
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