usbport.sys high latency issues...

hoodyhunter · 18 Jul 2012 at 23:52

hey guys, any advice for me please?....

Bought a self build mini itx build about a month ago from overclockers:

i5 3550 ivy
ASUS P8H77-I (mini itx board)
Sapphire HD7850 GPU
2x4Corsair 1600 ram
Corsair Force GT 120gb
Silverstone sugo 07 (includes Bronze 80+ PSU)
Win 7 home 64
RAT3 wired mouse
Roccat arvo keyboard.
Wireless usb adapter (cannot hard wire network)

Basically, i built the system to play BF3 at low / med settings.

The build went very smoothly and all has been working very well, apart from one very annoying little issue. When playing BF3, or any game in fact, after about 10/15mins i start to get stutter which increases until the game is totally unplayable. exiting the game leaves my PC very stuttery and i have to reset to bring it all back to normal. All temps are well within limits. Mem test ok, CPU load test fine. I've turned off speedstep and C1E reporting. Also put windows in high power settings, and de parked the cores so they're all running all the time.

Using Latency monitor to check for the problem driver, "usbport.sys" is reported very, very high latency causing high system interrupts etc. everytime i move the mouse the latency flies up about 50 ms (or something like that?). With all USB devices unplugged (mouse/ keyboard / wireless) the usbport.sys latency is fine with no high counts racking up?

Funny thing is, If i use the USB3 ports (instead of USB2 ports) on the mobo for the keyboard and mouse I have no problems at all? At least, no stuttering and the system seems to run normally for ages without any slow down?

All my drivers are fully up-to-date, and double checked again and again.

any suggestions on why I'm getting this issue?

thanks in advance

Jules

Sin_Chase · 19 Jul 2012 at 02:14

What happens when playing single player without the USB Wireless NIC plugged in?

hoodyhunter · 19 Jul 2012 at 02:44

before, with everything plugged in,including wireless usb, it would do the same. grind to a halt after 15mins. i'll try single player again but only with the mouse and keyboard plugged into the usb3 ports. see what happens?

I've just played about 1/1.5 hrs of BF3 with the keyboard and mouse plugged into the usb3 ports on the mobo and the wireless adapter in a mobo usb2 port. at least with this configuration i can play more than 15mins, something I've been struggling to do!!

get loads of DPC counts but it runs ok. dunno what is the norm though?

will report on single player offline

hoodyhunter · 19 Jul 2012 at 13:17

OK, tried the singleplayer game without the USB wireless plugged in.

With keyboard / mouse in mobo USB2 ports I'm still getting the stutter problem. only played 10 mins but i could see the latency starting to creep up.
With the keyboard /mouse in the mobo USB3 ports I don't seem to have any problems? latency stays low. if fact, the usbport.sys reading stayed put...nothings connected to the usb ports!

BTW - i also have USB legacy support disabled. not that it made much difference being on or off?

USB2 connected Latmon images here:

Resize images to a maximum 1024 pixels wide please.

anyone shed some light on my problem?

hoodyhunter · 27 Jul 2012 at 20:05

anyone?

PiKe · 27 Jul 2012 at 20:06

Try disabling HPET in Bios.

hoodyhunter · 28 Jul 2012 at 14:05

nope, doing that causes my system to run bad. even worse than the original problem.

I'll manage for now just using the usb3 port for the mouse. just wait for some future bios / chipset / mouse drivers update that might sort the problem. hopefully?