YouTube Performance Issues: High CPU Usage and Stuttering Reported by Users
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NooneAtAll3
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Summary
Users on Hacker News discuss experiencing high CPU usage and performance issues when using YouTube, particularly when running ad-blockers or encountering AV1 video codecs that their hardware doesn't support. The issues include CPU peaking to 100%, UI lag, and stuttering, though video playback often remains unaffected. The problems appear to come and go over time.
Key quotes
· 4 pulledI've had something similar happen starting maybe a year ago, and varying in intensity from 'no problem' up to 'pegged CPU in the youtube tab and UI actions can lag up to several seconds'
It doesn't affect video playback though. This behavior comes and goes over time, for example it's been fine for several weeks in a row now
I assume it's punishment for running an ad-blocker
If the video is encoded using a codec your hardware doesn't handle, it would be left up to the CPU to decode. Av1 can slow everything down to a crawl
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