Hogwarts Legacy

Hogwarts Legacy

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Top G Feb 9, 2023 @ 2:13am
AMD CPU BUG
hardware unboxed just confirmed that the game doesn’t use all cores on amd cpus https://twitter.com/hardwareunboxed/status/1623619232901767168
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Showing 1-15 of 42 comments
Bot Ryan Feb 9, 2023 @ 2:18am 
This makes a lot of sense. My Ryzen/Nvidia PC has been running a slideshow while my friends intel/nvdia PC runs it just fine while having worse gpu/cpu. My laptop, also intel/nvidia runs the game better than my dedicated PC.
Demonen Feb 9, 2023 @ 2:20am 
2
Yeah, that's right.

An AMD Ryzen Threadripper can have 128 threads. Are you saying you want the game to fully utilize all 128 threads?
This is not feasible for a game, as it would need to sync all this. Sure, you might run pathing logic and audio processing on different threads, but I'd be hard pressed to come up with 128 different concerns even as a joke, let alone a legitimate purpose.

There is not an unlimited amount of threading you can do before you start to get deminishing returns from the sync that has to happen, so of course it won't use all cores when you have 8, 16, 32 or 64 of them. How could it possibly do that?

Still worth it to have a bunch of cores "free" to do background OS tasks and the like, though.
Xellot Feb 9, 2023 @ 2:27am 
Originally posted by Demonen:
Yeah, that's right.

An AMD Ryzen Threadripper can have 128 threads. Are you saying you want the game to fully utilize all 128 threads?
This is not feasible for a game, as it would need to sync all this. Sure, you might run pathing logic and audio processing on different threads, but I'd be hard pressed to come up with 128 different concerns even as a joke, let alone a legitimate purpose.

There is not an unlimited amount of threading you can do before you start to get deminishing returns from the sync that has to happen, so of course it won't use all cores when you have 8, 16, 32 or 64 of them. How could it possibly do that?

Still worth it to have a bunch of cores "free" to do background OS tasks and the like, though.

Mate, nobody mentioned Threadripper. They compared a 7700X (8 core, 16 thread) part to the 13900K (8 performance cores, 16 efficiency cores) and the framerate with the 13900K is literally double that of the 7700X when using a 4090 and the same settings. This is very clearly a huge bloody problem affecting AMD CPUs specifically.
Demonen Feb 9, 2023 @ 2:32am 
Originally posted by Xellot:
Originally posted by Demonen:
Yeah, that's right.

An AMD Ryzen Threadripper can have 128 threads. Are you saying you want the game to fully utilize all 128 threads?
This is not feasible for a game, as it would need to sync all this. Sure, you might run pathing logic and audio processing on different threads, but I'd be hard pressed to come up with 128 different concerns even as a joke, let alone a legitimate purpose.

There is not an unlimited amount of threading you can do before you start to get deminishing returns from the sync that has to happen, so of course it won't use all cores when you have 8, 16, 32 or 64 of them. How could it possibly do that?

Still worth it to have a bunch of cores "free" to do background OS tasks and the like, though.

Mate, nobody mentioned Threadripper. They compared a 7700X (8 core, 16 thread) part to the 13900K (8 performance cores, 16 efficiency cores) and the framerate with the 13900K is literally double that of the 7700X when using a 4090 and the same settings. This is very clearly a huge bloody problem affecting AMD CPUs specifically.

Well, yeah, I'm not saying there isn't a problem. I'm saying that it's unreasonable to expect the game to fully use all the resources of a modern CPU. The Threadripper is just an extreme example to illustrate that.

Besides, you can never ever fully compare an Intel CPU with an AMD CPU directly, as they are not compatible with the same motherboards. Benchmarks are hard.

If you have a top range AMD CPU on a cardboard motherboard where the lanes are drawn on in crayon, and then you have a midrange Intel CPU on a very well built motherboard, then it's not really the Intel CPU outperforming the AMD one.

Again, of course, there could very well be a serious problem with the game being heavily optimized for certain Intel instruction sets. I don't know, and it's well worth looking into.

"Not using all the cores fully" is a gross oversimplification that doesn't help anyone.

(Edited because English is not my first language, and I make a lot of mistakes)
Last edited by Demonen; Feb 9, 2023 @ 2:33am
AcuossAtlantic Feb 9, 2023 @ 2:37am 
I have an AMD 580 rx 8gb with a Ryzen 5700G processor. Are there bugs? Why do I get several bugs?
CursedPanther Feb 9, 2023 @ 3:30am 
That's a really interesting issue considering that both PS5 and XSX are using AMD processors. Or is it specifically a Zen 4 issue?
iFred Feb 9, 2023 @ 3:38am 
5900x/3080 here and this statement seems to explain the problems I have.
Braiven Feb 9, 2023 @ 4:26am 
Any cope that the day 1 patch will fix it?
I'm using a 5600X and not experiencing any issues performance wise. Just some small graphical bugs
Zero Feb 9, 2023 @ 4:28am 
You can use System Informer or Process Lasso to force the game to use all cores.
Have fun playing folks.
ScruffyBamboo Feb 9, 2023 @ 4:30am 
Originally posted by iFred:
5900x/3080 here and this statement seems to explain the problems I have.

5900X/3080ti and I'm running smooth as butter (100-120fps Ultra 1440)
UnL1k3 Feb 9, 2023 @ 4:32am 
Originally posted by ScruffyBamboo:
Originally posted by iFred:
5900x/3080 here and this statement seems to explain the problems I have.

5900X/3080ti and I'm running smooth as butter (100-120fps Ultra 1440)
Either post a video of it "running smooth as butter" with a frametime graph or its cap
Baksu Feb 9, 2023 @ 4:50am 
I have ryzen 5 1600 rtx 3060 and 16 go of ram the games is lagging and stuttering which makes it non playable and ideas?
Top G Feb 9, 2023 @ 4:58am 
Originally posted by Baksu:
I have ryzen 5 1600 rtx 3060 and 16 go of ram the games is lagging and stuttering which makes it non playable and ideas?
play on medium with fsr 2 on performance or wait for patch
Adam Feb 9, 2023 @ 5:03am 
Originally posted by Sparkling Water:
Originally posted by Baksu:
I have ryzen 5 1600 rtx 3060 and 16 go of ram the games is lagging and stuttering which makes it non playable and ideas?
play on medium with fsr 2 on performance or wait for patch

I'm playing on low settings, 4K with DLSS set to Ultra Performance and getting a smooth experience. Will just have to wait until patches come out to fully see the higher graphics modes. It's a shame, I'm enjoying the gameplay but visually it could be way better.
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Date Posted: Feb 9, 2023 @ 2:13am
Posts: 42