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eiz / SynchronousAudioRouter

Low latency application audio routing for Windows
http://sar.audio/
GNU General Public License v3.0
999 stars 136 forks source link

Changes in May 2019 Windows update cause crackle and distortion #70

Open paulheu opened 5 years ago

paulheu commented 5 years ago

Something changed in the current windows update which causes severe crackling and pops in SAR. I notice that heavy network activity will also causes these and sometimes throws audio out of sync.

Never had these issues prior and as there have been a number of changes to the audio subsystem in this update that obviously plays into it.

Would be really nice to hear anything on his, have others see this and/or is there a fix coming?

amurzeau commented 5 years ago

If network activity cause audio issues, I guess the network driver lock the cpu for too much time under load and increase system latency. Does the network driver get updated at the same time ? What's the update version and your previous one ?

cjunekim commented 5 years ago

Yes. This is a well known issue. Windows update 1903 causes ntoskrnl.exe to take a peak DPC latency over 1ms. Many user attempts turned out to be failing. Currenly, the only solution is reverting back to 1809. I guess MS is working on this.