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Heard usb 2.0 is good for isr/dcp lat w few nvram tweaks

placebodebil wrote: ↑

12 Sep 2025, 07:58

Heard usb 2.0 is good for isr/dcp lat w few nvram tweaks

if you system z690+ you can try usb1 usb2 usb3 usb4, mean GL 2.0 controller

placebodebil wrote: ↑

12 Sep 2025, 07:58

Heard usb 2.0 is good for isr/dcp lat w few nvram tweaks

There isn't enough conclusive data to give you a conclusive answer.
Refer to my "evaluating xhci controller performance" thread for more information.

Slender wrote: ↑

13 Sep 2025, 13:32

if you system z690+ you can try usb1 usb2 usb3 usb4, mean GL 2.0 controller

You are completely ignorant what those terms mean, nor have you evaluated DPC/ISR performance on any non-AMD/Intel add-in cards using 1st party ETW-based tooling (e.g.: MXA)
Please stop sharing misinformation on these forums & read Microsoft documentation or engineers who're well-versed in this topic, thanks.