I would first swap mice. It could be a bad mouse. Then I'd reinstall drivers. The mouse driver and GPU drivers can do this and uncommonly other drivers could be causing a lag like that. Then I'd check Windows power saving settings. Those all are more likely causes of mouse problems than the way Alder Lake is built.
Any interconnect latency would be well below human perception. And if that were actually a problem, would be noticed by more than one person.
Well, that machine was off. I turned it on and was trying to type in the search window, but it was like no keyboard. 10 seconds later it comes back. I can't find "Intel Rapid Storage" device, but it needed a windows update, so I will look again after that finishes. Thanks, I think I just verified it again.
OK, after hours of updating drivers. I MAY have fixed the problem. I can say its only windows 11 and Alderlake, but I cannot say what it is exactly.
The dreaded Alder Lake USB Bug! Discovered right here on Anandtech forums.
Funny how in just 2-3 thread pages we've gone from "Thread Director may have hardware bugs" to "updating drivers solves issue, wasn't about Thread Director anyway".
I can confirm that disabling HT increases the Geekbench ST score on i5-12400, from 1600s to beyond 1700, faster than Apple M1.
You did notice that there is only ONE post that says the issue MIGHT be solved by updating drivers. I only was being honest, as I did not see the issue for about 10 minutes after the last bunch of updates and driver updates. Don't be jumping to conclusions on my part, when I said MIGHT, I mean it. Trying not to be a negative impact, but real feedback. I have just never seen anything like this before.
I think an important point is that supposedly this issue is not a problem when E-Cores are enabled, just when only P-Cores are present.
That's still happening on Win10, and from what I'm seeing on my machine there's a lot of thread movement on two of the P-cores, with other cores seeing less hopping (but still present).
Here's screenshots to illustrate what @JoeRambo is talking about. First Task Manager crop is 8+0/16t, the one bellow is 8+4/20t. Notice how threads no longer hop between logical cores.
You're not the one spreading the FUD in this thread, my issue is not with you reporting the problem or a POSSIBLE & unconfirmed solution.
Super interesting. Anyone notice how with E-cores disabled, the workload seems to be taxing 10 cores but with E-cores enabled, only 8 cores are handling the brunt of the workload?
It's 8 thread sized workload, so 8 physical cores handling the load is the optimal behavior for this workload. And esp important is the sticking of same thread to same core it was scheduled before to keep L2 caches hot.
Comments?! All of this and much more was discussed by @JoeRambo , @Hulk and myself on various occasions since we bought and tested out ADL systems. This ain't new at all for people following this thread since Dec 2021. More than that, I'm one of the more vocal skeptics when it comes to Intel's hybrid approach for the desktop (there's a reason I joke about "Thread Dictator"), so take that as a further indicator of how unfounded or alternatively blown out of proportions your comments about Thread Director are.
I'm just interested in your views on why disabling HT is increasing performance with E-cores disabled. Something wrong with the Windows scheduler or is it more a hardware related issue?
True but JoeRambo is experiencing performance improvement in CB23 with HT disabled. It's some thread hopping issue.
If it's one hop, then yes. If not . . .
Well it kinda was.
Looks like it's more of an OS + platform issue, due to the way Windows is handling usb mouse/keyboard drivers on those systems.
Methinks thou dost protest too much. It wasn't going to be Thread Director in Mark's case since he leaves the e-cores disabled anyway. And it certainly wasn't going to be the e-cores themselves causing mouse slowdown since Core2 systems could drive USB mice just fine. Most of the commentary about Thread Director being problematic relate to matters having nothing to do with mouse/keyboard functionality.
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