Re: Poor USB performance on ASUS 520 motherboard (no IRQ?)

[Hans Petter Selasky]

On 11/24/21 23:33, Daniel O'Connor wrote:
I found that the Gigabyte GA-A320M-H one works fine but the ASUS A520M-A/CSM 
one is significantly slower for tests where there are many back and forth 
messages (streaming data seems fine).

Hi,

There is a register in the XHCI PCI area, to set the IRQ latency. You 
may want to check the PCI IDs towards Linux if these chips require some 
kind of special quirks.

--HPS