Audience - sound temporarily disappears on high CPU load

[Joseph Botosh]

When I open a *.mkv video, the sound works for about 15 seconds, then disappears for 30-60 seconds (I have high CPU usage during this time), then when the playback "stabilizes", the sound is fine again.

Another way to reproduce the issue: I'm running a video for some time, then open a "heavy" program (like Google Chrome), and while the program is loading (CPU is highly used), the sound disappears.

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.350+394~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Sat Aug 23 20:03:02 2014
InstallationDate: Installed on 2014-08-11 (12 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20140810)
SourcePackage: elementary-meta
SuspiciousXErrors: [WARNING:flash/platform/pepper/pep_module.cpp(63)] SANDBOXED
ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)