A Andunemir Member Joined Oct 16, 2013 Posts 7 Oct 19, 2013 #1 Hi, New here and coming with the usual combination of what seems to be high DPC/sound stuttering in Windows 7 x64. It's been happening basically since the beginning and usually after having the PC running for a while. If I restart it takes a while until it creeps back up. I have all drivers up to date as far as I know and having installed one or another didn't make any difference. Run LatencyMon and xperf and the main culprits seem to be the network processes (netbt.sys, ndis.sys and tcpip.sys) and iusb3xhc.sys. I have tried disabling the Ethernet and anything related to NDIS, since it's usually the highest one, but still peaking. Also disabled the Wi-Fi miniport adapters but still the same. I have a Toshiba Satellite with these specs: OS: Windows 7, x64 Processor: Intel i7-3610QM @ 2.30GHz RAM: 16GB Sound: Onboard Realtek Video: NVIDIA GeForce GT 630M Any help would be most welcome because it drives me insane having to drop everything and restart to get it back to normal. Cheers!