The Latency Show
New member
- Aug 16, 2020
- 2
Greetings :)
Badly-needed homebuilt desktop, Win7 SP1 x64, original install 4 years old on ADATA SU800 SSD, FX-4330, 32GB (4 x 8GB) G.SKILL F3-1866C9D-16GSR, identical twin GT-710, Asrock 970 Extreme4, Thermaltake Toughpower GF1 650W 1 month old, Windows Firewall and Defender low risk DAW used by sensible and experienced person, PowerISO installed but disabled, no overclocking.
http://speccy.piriform.com/results/TehTPQvCqKOyvJat6g0V2CK
I've long been the guy people contact when they have Windows problems. Thanks to the posts of those much smarter than I (a trillion thanks to you magnificent geeks) plus my persistence, never have I asked for help on any forum in 25 years of system building and facing a multitude of issues. This one has me stumped after a long day of battle.
The system has been a flawless workhorse for years, then dragged me through the gates of hell upon upgrading 16>32GB RAM. Replacement power supply solved that after a days-long tangle with bizarre symptoms.
In the month since then, it's again been flawless, used as a DAW and media server with a M-Audio Profire 610 Firewire audio interface. Yesterday, though, things went slap nuts.
I made some much-anticipated changes to my work area and added a studio subwoofer and monitor speakers to the setup. With the speakers strewn front of me to test, everything worked fine. Upon moving the speakers to their proper locations and doing a bit of neatening around the computer, the trouble started with stuttering MP3 audio on the maiden voyage. So anticlimactic it was.
It was fine an hour before. The only change I made to the computer was to secure a 4 port USB 2.0 header connected to the mobo with the proper screw in rear expansion slot.
See, I was so worn out from the last “trategy” a month ago that I didn't secure the header, which had 2 ports used - extension cable to dongle for wireless secondary KB/mouse and cable to USB hub in Dell monitor.
Upon rebooting, the normally-zippy box had tremendous initial latency, with the Asrock spash screen up for minutes and a slow slog to Windows loading, after which it ran stable and much faster, but with the same lag + audio stutters, pops, crackles and video choppiness.
Unplugging the two devices from the USB header resulted in a normal boot and a huge sigh of relief.........
…..... yet the latency in W7 remains. Curses!
She works fine with a tiny lag so long as you don't engage audio or video. Removing the USB header, which required removal of one of the video cards to unplug from the mobo, had no effect.
Disabling non-Windows services clean boot did not help, nor did the litany of typical fixes one runs across researching the matter. All USB devices other than the trackball have been disconnected and the trackball has been moved to various ports, no change. Firewire audio disconnected with just onboard mobo Realtek sound remaining.
***The problem does not occur in Safe Mode - CPU at zero when it should be.***
LatencyMon and DPC Latency results are a hot mess. nvlddmkm.sys DPC disaster. Updating Nvidia driver with clean install of no help.
The lone past issue with any CPU hogging was solved by switching to Firefox from Chrome many months ago. The current latency issue shows consistent 23% +/- 4% CPU use, never less, when idle.
The system is stable and now boots very quickly, just beset by latency that popped up seemingly from out of nowhere and seems to have been negatively influenced, if not outright caused by securing a USB header with the typical one little screw and positively influenced by unsecuring said object and/or unplugging the 2 long--familiar devices from them (I did both at once while booted down, unfortunately).
Problem is....that infernal USB header is nowhere near the computer now, yet the trategy remains.
Cheers! Stay safe.
Badly-needed homebuilt desktop, Win7 SP1 x64, original install 4 years old on ADATA SU800 SSD, FX-4330, 32GB (4 x 8GB) G.SKILL F3-1866C9D-16GSR, identical twin GT-710, Asrock 970 Extreme4, Thermaltake Toughpower GF1 650W 1 month old, Windows Firewall and Defender low risk DAW used by sensible and experienced person, PowerISO installed but disabled, no overclocking.
http://speccy.piriform.com/results/TehTPQvCqKOyvJat6g0V2CK
I've long been the guy people contact when they have Windows problems. Thanks to the posts of those much smarter than I (a trillion thanks to you magnificent geeks) plus my persistence, never have I asked for help on any forum in 25 years of system building and facing a multitude of issues. This one has me stumped after a long day of battle.
The system has been a flawless workhorse for years, then dragged me through the gates of hell upon upgrading 16>32GB RAM. Replacement power supply solved that after a days-long tangle with bizarre symptoms.
In the month since then, it's again been flawless, used as a DAW and media server with a M-Audio Profire 610 Firewire audio interface. Yesterday, though, things went slap nuts.
I made some much-anticipated changes to my work area and added a studio subwoofer and monitor speakers to the setup. With the speakers strewn front of me to test, everything worked fine. Upon moving the speakers to their proper locations and doing a bit of neatening around the computer, the trouble started with stuttering MP3 audio on the maiden voyage. So anticlimactic it was.
It was fine an hour before. The only change I made to the computer was to secure a 4 port USB 2.0 header connected to the mobo with the proper screw in rear expansion slot.
See, I was so worn out from the last “trategy” a month ago that I didn't secure the header, which had 2 ports used - extension cable to dongle for wireless secondary KB/mouse and cable to USB hub in Dell monitor.
Upon rebooting, the normally-zippy box had tremendous initial latency, with the Asrock spash screen up for minutes and a slow slog to Windows loading, after which it ran stable and much faster, but with the same lag + audio stutters, pops, crackles and video choppiness.
Unplugging the two devices from the USB header resulted in a normal boot and a huge sigh of relief.........
…..... yet the latency in W7 remains. Curses!
She works fine with a tiny lag so long as you don't engage audio or video. Removing the USB header, which required removal of one of the video cards to unplug from the mobo, had no effect.
Disabling non-Windows services clean boot did not help, nor did the litany of typical fixes one runs across researching the matter. All USB devices other than the trackball have been disconnected and the trackball has been moved to various ports, no change. Firewire audio disconnected with just onboard mobo Realtek sound remaining.
***The problem does not occur in Safe Mode - CPU at zero when it should be.***
LatencyMon and DPC Latency results are a hot mess. nvlddmkm.sys DPC disaster. Updating Nvidia driver with clean install of no help.
The lone past issue with any CPU hogging was solved by switching to Firefox from Chrome many months ago. The current latency issue shows consistent 23% +/- 4% CPU use, never less, when idle.
The system is stable and now boots very quickly, just beset by latency that popped up seemingly from out of nowhere and seems to have been negatively influenced, if not outright caused by securing a USB header with the typical one little screw and positively influenced by unsecuring said object and/or unplugging the 2 long--familiar devices from them (I did both at once while booted down, unfortunately).
Problem is....that infernal USB header is nowhere near the computer now, yet the trategy remains.
Cheers! Stay safe.
