Muh deadzone: Windows USB3 MSI mode driver the #1 destroyer of aim ever created - Page 3 - Overclock.net - An Overclocking Community

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Muh deadzone: Windows USB3 MSI mode driver the #1 destroyer of aim ever created

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post #21 of 74 (permalink) Old 04-13-2020, 10:50 AM
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I didn't notice any difference on i5-3570, will try it on my main PC tomorrow.
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post #22 of 74 (permalink) Old 04-13-2020, 11:48 AM - Thread Starter
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Quote: Originally Posted by Th3Awak3n1ng View Post
I didn't notice any difference on i5-3570, will try it on my main PC tomorrow.
There's no need to bother doing this with z77 since z77 lets you just disable USB3 entirely and use USB2. This would only be useful for z87 and higher. But the only chipset I've actually tested this is z87, so YMMV if using a z97+. The only Skylake board I own is in an Asus Zenbook laptop, so it's not the greatest test subject.

I don't know if Z97 and up's USB3 controller has the same dead zone issue as z87. All I know is that the deadzone is resolved on z87 by changing from MSI to line based interrupt. I would assume it would be beneficial for other chipsets as well.

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post #23 of 74 (permalink) Old 04-13-2020, 04:31 PM
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Quote: Originally Posted by r0ach View Post
(because Z97 has no USB2 controller at all)
Z97 has two USB 2.0 EHCI, similar to Z87.


Example using W10

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post #24 of 74 (permalink) Old 04-13-2020, 05:25 PM - Thread Starter
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Ah, I thought they removed them on Z97. I have a Skylake laptop and the ONLY entries under USB at all are an XHCI controller and XHCI root hub and NOTHING else. I guess they removed the USB 2.0 controllers on the laptop chipsets but not the desktop?

I was pretty sure Skylake had no USB 2.0 controller in it. Also strange that your Z97 chipset actually allows you to use the EHCI controller. On Z87 it forces the USB 2.0 ports to act in passthrough mode to the USB3 controller if you plug something into the USB 2.0 port as shown here:


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post #25 of 74 (permalink) Old 04-13-2020, 05:41 PM
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some of the cheaper stuff definitely leaves off2.0.

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post #26 of 74 (permalink) Old 04-13-2020, 11:57 PM
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Quote: Originally Posted by r0ach View Post
I was pretty sure Skylake had no USB 2.0 controller in it. Also strange that your Z97 chipset actually allows you to use the EHCI controller. On Z87 it forces the USB 2.0 ports to act in passthrough mode to the USB3 controller if you plug something into the USB 2.0 port as shown here:
Skylake is newer than anything I've owned but as far as I know the 100 series PCH no longer supports EHCI.

Should be able to configure EHCI for the Z87. Here's my Haswell laptop with 8 series PCH (HM87).

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post #27 of 74 (permalink) Old 04-14-2020, 02:39 AM
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Quote: Originally Posted by r0ach View Post
All I know is that the deadzone is resolved on z87 by changing from MSI to line based interrupt. I would assume it would be beneficial for other chipsets as well.
I've just tested this on my Ryzen build (X370, no EHCI, only XHCI) and it feels SO MUCH better now. Mouse movement feels like I've got new mouse skates. And it's more responsible for sure. I will test further later in the evening, but the difference is easily noticeable already.
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post #28 of 74 (permalink) Old 04-14-2020, 07:14 AM
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Quote: Originally Posted by Th3Awak3n1ng View Post
I've just tested this on my Ryzen build (X370, no EHCI, only XHCI) and it feels SO MUCH better now. Mouse movement feels like I've got new mouse skates. And it's more responsible for sure. I will test further later in the evening, but the difference is easily noticeable already.
can you specify if it feels 3,4 times better or 1,8 times, for science?

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post #29 of 74 (permalink) Old 04-14-2020, 10:37 AM
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post #30 of 74 (permalink) Old 04-14-2020, 01:08 PM
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Quote: Originally Posted by numberfive View Post
can you specify if it feels 3,4 times better or 1,8 times, for science?
Sure I can.
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