[Solution found!] Even more CPU spikes after the patch; the game is unplayable.

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could this be the bottleneck? What bandwidth do you need to play PoE without lagspikes nowadays?

Bandwidth is kind of irrelevant, anything with say ten megabits and up should be fine, it's latency that matters most (like say i have about 100mbit fiber optic connection and another 50 or 100 over TV cable as a backup - the difference is huge despite the same banswidth).

As for the lag spikes, they are most likely caused by either not-so-optimized code or that old pentium server shitting bricks due to high player count. League is still quite young.

Shame to see these multithread bug reports have (FIXED/SOLUTION) tags wrongly assigned. It's probably confusing the GGG team into thinking there isn't an issue.

After searching reddit I came across this post from 3 months ago:

https://www.reddit.com/r/pathofexile/comments/qkf2ea/solution_for_my_fps_dropslags/

OP suggests that running 'OBS' recording software in the background fixed his stuttering with multithread enabled. I installed OBS and tried recording whilst playing, but the stuttering still persisted for me.

This got me wondering.. What if I run a video in the background?

I loaded up a twitch stream in firefox & the stuttering disappeared.

Does this solution work for anyone else?



Left: twitch open

Right: twitch closed (cpu spikes up to 100-150ms)


What's interesting here is with firefox open my cpu clock is flat lined. without, it appears to jitter?

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fistbang wrote:

What's interesting here is with firefox open my cpu clock is flat lined. without, it appears to jitter?

your cpu has multiple real cores (my ryzen 9 got 12).

win got a load balancer, that, under normal load (multiple programs open) distributes programs and threads on all the individual cores (in taskmanager you can also restrict programs to certain cores).

if there is a single app running, win tries to put the app on one core cause some cpus can increase the clock rate of a single core while decreasing it on other cores if other those cores aren't used.

your clockrate with "twitch open" shows the summary of all cores while the one with "twitch closed" shows the clock rate of your cpu trying to scale it up to run poe on one core.

d

Similar issue here, had terrible spikes and stuttering framerate since 3.17 launch, almost unplayable. Switching to Vulkan renderer have solved problem completely in my case.

Who can help me after 10 feb lost more than 100+ fps in only hideout from 200-240 and now poe unplayable AMD Ryzen 5 3600, nvidia rtx 3060 vulkan render

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N3v3rGr1nd wrote:

GGG, are you gonna fix this shit or what???

https://youtu.be/wkxmNhYRS2Q

Look at this nonsense. Definitely not a game issue, just our cpus being trash, right?
P.S. I can't even record it with software cuz the spikes disappear as soon as I start recording.

Yep, this demonstrates it well. Have the same problem on my ancient PC, haven't had this sort of thing happen before until 3.17. It's weird that it appears to be more pronounced the less things are happening, seems to be worse in hideout that in maps.

Turning off Affinity to two of my 4 physical cores seems to get rid of the lag spikes but it absolutely tanks the games general performance.

Win 7 64bit, i5 2500k @4.5ghz 16gb ram gtx 980 on Vulkan (Dx11 doesn't fix this issue)

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N3v3rGr1nd wrote:

GGG, are you gonna fix this shit or what???

https://youtu.be/wkxmNhYRS2Q

Look at this nonsense. Definitely not a game issue, just our cpus being trash, right?
P.S. I can't even record it with software cuz the spikes disappear as soon as I start recording.

Hi guys, the CPU "spikes" you observed are related to your CPU frequency scaling. As your CPU is overpowered, the game runs fine compared to me.

On the video, it's perfectly illustrated. When the character does nothing CPU usage is low, so CPU frequency is reduced. So you observe "spikes". But FPS are acceptable. When character cast skills, CPU usage increase and spikes disappears as CPU frequency is increased.

You can change your CPU performance mode on maximum power, or disable CPU throttling (BIOS?) but that's not good for the Earth ;)

My PC had the same performance related problems described in this thread.
I tried every "fix" (No HT/SMT, no C-States, force cores to max frequency, core affinity etc.) There was some improvement doing some of these but no outright fix to the root cause of the problem.

Until I turned on "Hardware Accelerated GPU Scheduling" in Windows itself.[/b]
(Settings->System->Display->Graphics Settings, or simply search for "Graphics") This requires a system restart.

The erratic CPU-spikes are mostly gone now, almost a flat line.
Still fixed after several system restarts and PoE restarts.

I sincerely hope this information helps others and isn't just a fix for my specific system configuration.



Edit: Spikes are somewhat back for me too.. so this probably wasn't it.
I think I have tried literally everything now. At my wits' end.
I somehow get the impression that fluid game performance is more up to chance than anything I actively change about the system?

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Danylo wrote:

My PC had the same performance related problems described in this thread.
I tried every "fix" (No HT/SMT, no C-States, force cores to max frequency, core affinity etc.) There was some improvement doing some of these but no outright fix to the root cause of the problem.

Until I turned on "Hardware Accelerated GPU Scheduling" in Windows itself.
(Settings->System->Display->Graphics Settings, or simply search for "Graphics") This requires a system restart.

The erratic CPU-spikes are mostly gone now, almost a flat line.
Still fixed after several system restarts and PoE restarts.


I sincerely hope this information helps others and isn't just a fix for my specific system configuration.

My cpu spikes while idle are every few seconds but while combating they are hectic, tried ur fix and didn't seem to help me :(