Do you use Bitdefender?
Hi, you may like to try stopping your AV doing port scans, if it does.
Follow thru any ideas in these:
USBPORT.sys causing high interrupts in my system, leading to CPU usage spikes and stutter in games. Is it a problem with my motherboards USB ports or my Fiio E10?
The attached file contains all the hints and possible solutions I've picked up from these reports. There are som fixes that have worked for those people, but each situtation is individual.
Have a look at your task manager- you may find System Interrupts is using more CPU time than it should.
Okay, a part of the crackling is solved.
"cmudaxp.sys" created some huge DPC spikes therfore I simply deactivated the soundcard and a part of the crackling is gone now.
I checked the latency with the Windows Performance Tool again, now there's still the usbport.sys which is causing DPC-spikes.
Now...how can i resolve this issue? Because usbport.sys is a file made the operating system, i obviously can't uninstall it.
Hi, in the attachment I posted, you will see this:
PC Lagging very much usually when i make high network traffic
For me it was BitDefender's port scanning protection feature, once I'd disabled that problems were gone.Try this: open BitDefender, go to Modules (in the bottom) > Firewall and there disable Block port scans in the network and restart LatencyMon to see if it worked, changes should be immediate.
Problem with compressed memory process
USBPort.sys was the top offender in the LatencyMon report
I can confirm that Bitdefender Total Security 2016 is the culprit causing this problem on my system. After disabling the Firewall the CPU load went down immediately.
This may give you a clue.. but it may be sthg else in your case.
Try disabling your firewall?
This is useful (note- Win 7, same issue)
Usbport.sys causes high DPC over time. - Page 2 - Windows 7 Help Forums
- discusses interrupts, mentions WLAN (sometimes implicated)...
Here's a list of some of things you might consider trying people have found have helped:
- Remove Intel Rapid Storage Technology (RST) - used for SSDs
- Use high performance power plan (but -> higher CPU power consumption, clock faster)
- Update BIOS
- Update Intel MBO drivers
- Change Wifi router beacon polling interval to 100ms (can be 1-1000ms). >100 causes stutter.
(So sending the signal LESS frequently causes stutter...)
"It is not strictly necessary to have a beacon if the user knows the name of the AP.
A lower interval means faster detection of the AP, but at the cost of increased use of the airtime. In general, leave it at the default, or turn it off if you don't need it."
What doesn't help:Clean install, windows updatesNot apparently related to:
AMD vs Intel processor
particular sound cards (although commonly reported with ASUS Xonar)
May be related to particular LAN cards
Okay, it seems that I first installed the wrong driver for my soundcard which caused some issues. Installed the right one, now i can use it without problems.
But there are still crackles which don't have anything to do with the soundcard (tested with and without soundcard).
- Deactivating the Firewall didn't help (also I don't use BitDefender, I use GData), didn't find any settings that you described (they probably don't exist)
- I don't have an Intel Storage Technology Driver, therefore i can't remove it (i got a SSD with Samsung Drivers)
- BIOS is already updated (see first post)
- no Intel Mainboard here (atleast if that means Intel MBO?), mine is from ASRock
- already tested with switched off WiFi router, did not help (also never had really problems with it)
Ok, run another check for latency and see what it points to.
The point about motherboard drivers applies- there are many drivers related to that, and maybe an update check will help.
But bear in mind Windows will quickly replace them unless you protect them (see Tutorial section for a tutorial on how to hide Winows updates).