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DPC latency in Windows 8
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Janusz Grzybek

Joined: 17/09/2010 08:22:05
Messages: 364
Location: Poland, Zabrze

DPC Latency Checker (v.1.30) shows very high DPC latency (average 1000 microseconds) in Windows 8. This is results of changes in Windows 8 kernel related to power saving features, but it is not influence on audio production. So please, do not worry about high DPC latency values in DPC Latency Checker. Instead DPC Latency Checker, you could use Resplendence LatencyMon v.5. They already updated this tool due changes in Win kernel and LatencyMon is fully compatible with Win 8. Current LatencyMon version has 2 monitoring options "Kernel timer latency" (used with Win 7 and older) and "Interrupt to user process latency" (used with Win 8 ).

Recently I found small freeware tool "DPC Latency Enhancer" made by Snithson Martin (developers of DAW controllers for touchscreens). This tool could decrease DPC latency (during tests it decreased DPC latency on my PC from average 120 microseconds to 30 microseconds). So if you encounter DPC latency issues, you could try this tool. If you would like download it, you need fill form on this website and find it in software download tree (in Free Tools node). Free version display nag screen at start up, and you need click button for hide it.


This message was edited 2 times. Last update was at 15/02/2013 16:18:58

Unofficial support of Polish Language Pack for PreSonus Studio One

Hardware gear:
Yamaha 01X + 2 x Yamaha i88X, Muse Receptor Pro, Novation Supernova, Kawai K5000W, Nektar Panorama P4, TC Electronic FireworX, Behringer BCR 2000, Yamaha RM1X, Alesis RA-300, Yamaha NS-10, couple mics.

Custom rack mounted PC - CPU i7 2700K, Asus P8P67 Deluxe, 16 GB RAM DDR3 Kingston HyperX 1600 MHZ, SSD 120 GB Samsung 840 Series (OS, software), SSD 250 GB Samsung 840 Series (VST data, recent projects, often used samples), HDD WD Caviar Blue 1 TB SATA III 7200 RPM (old projects, samples, backups, etc.), Asus HD 6450 Silent, Touchscreen monitor Dell 22'', Windows 8 32-bit.
Laptop HP DV7-2140eg - Core 2 Quad, 8 GB RAM, 2 x 500 GB 7200 RPM SATA II HDD, Windows 7 64-bit.

Studio One Pro 2, FL Studio Producer 11, Celemony Melodyne Editor 2,Toontrack Superior Drummer 2 + SDX Metal Foundry, EZdrummer + EZX Electronic, FXpansion Geist, U-he Zebra 2.5, KV331 Audio SynthMaster 2.6, Camel Audio Plug-in Bundle, Synapse Audio Dune, Rob Papen Blade, Cakewalk Z3TA+, Rapture, Dimension Pro, Magix Independence Pro Suite 3, Wusikstation 7, AMG Beat Producer, Kirnu Cream, Sugar Bytes Guitarist, Turnado, Effectrix, NI Guitar Pro Rig 5, Nomad Magma, iZotope Ozone 5, IK Multimedia T-Racks 3 Standard, DNR MixControl Pro 1.5, SFX Machine Pro, lot of freeware VSTi and FX.

Joined: 16/04/2009 10:27:02
Messages: 1647
Location: Hamburg

thanks for that!
May the voodoo be with you!
[ StudioOne Developer DSP ]

Performance FAQ
Daw stew

Joined: 11/10/2012 14:04:16
Messages: 944

Excellent. I have a discontinued audio device so I'll try that and see if my latency issue goes away.
Windows 7 x64
Core2Duo E4300 Cpu
4gb DDR2 RAM
ASUS P5B-E motherboard
Nvidia graphics card
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