I'd very much like to know what you did to get usbport.sys that low, if you can think of exactly what you did.

I agree with dalchina, though, that you still have significant latency problems.

I'm not sure if I'm up for all of that at the moment, but I'll keep it in mind.

I appreciate the reply. If you wouldn't mind, I'd like to see a screenshot of the drivers tab of LatencyMon to see exactly what usbport.sys is doing with your Firewall disabled, as "everything is...

No, that's something that I haven't tried. How should I go about getting older USB controller drivers? And then the obvious questions are which older USB controller drivers should I use, and are...

For anyone else reading this thread, there's definitely some good advice in there that's well worth checking out. I've unfortunately already been through all of what's suggested in that thread. The...

I normally use a combination of Windows check and Driver Booster to make sure I'm good.

Drivermax found a network driver update. I installed it, and no change regarding usbport.sys. Everything...

Yes, I indicated above that I'm on high performance with processor power management min/max states at 100%, and USB selective suspend disabled.

- All sound effects disabled. Using 16 bit, 44100 Hz.
- System interrupts remains under 1% most of the time
- I'm using the Logitech G502 (wired mouse)
- No IRQ conflicts as far as I know. I've...

I don't mean to hijack the OP's thread, but since I'm being asked, and because what I say might help, I'll quickly go over some of the things that I've tried to resolve the issue.

- I'm on a fresh...

Yes, I read through a number of different threads prior to posting here. I'm still interested in hearing about what usbport.sys is doing in LatencyMon for the two posters quoted above. As I said,...

I'm actually having issues with usbport.sys myself, but I don't have Bitdefender installed. I tried disabling Windows Defender and Windows Firewall, and neither change had any effect on ISR count or...