Bug 403274 - High CPu usage with Qtwebengineprocess when playing Youtube videos
Summary: High CPu usage with Qtwebengineprocess when playing Youtube videos
Status: RESOLVED UPSTREAM
Alias: None
Product: Falkon
Classification: Applications
Component: general (other bugs)
Version First Reported In: unspecified
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: David Rosca
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-01-16 15:58 UTC by tromzy
Modified: 2019-04-16 14:28 UTC (History)
1 user (show)

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Description tromzy 2019-01-16 15:58:17 UTC 
SUMMARY
Playing a Youtube video makes my CPU usage go up to 50% and makes the whole session sluggish. The Qtwebengineprocess is what takes all the CPU.

STEPS TO REPRODUCE
1. Go to Youtube with Falkon
2. Play a HD video
3. Enjoy slideshow

OBSERVED RESULT
Up to 50% CPU usage on quad core CPU

EXPECTED RESULT
Smooth experience

SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.14.5
KDE Frameworks Version: 5.54
Qt Version: 5.12.0

ADDITIONAL INFORMATION
Comment 1 David Rosca 2019-01-17 09:00:28 UTC 
There is no HW video decoding in QtWebEngine.