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Youtube has started to artificially slow down video load times if you use Firefox. Spoofing Chrome magically makes this problem go away. (old.reddit.com)

submitted 1 year ago by db0@lemmy.dbzer0.com to c/technology@lemmy.world

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[–] Phoenix3875@lemmy.world 3 points 1 year ago (1 children)

Not trying to defend Chrome here as I dislike their other behaviours, but just from what's presented in the video, an alternative explanation would be caching. That is, when the reloading is triggered by the switch of user-agent, the cache is reused and thus a shorter load time.

To exclude this effect, the user needs to either

Spoof the user-agent and at the same time clear cache (you can disable cache when reloading through the developer's tool), or
Clear cache, spoof the user-agent to Chrome. Load page, disable the spoofing, reload.

[–] registrert@lemmy.sambands.net 2 points 1 year ago (1 children)

Have you seen this?

https://feddit.it/pictrs/image/0e13c670-4966-4073-89df-f042fe9cc6de.webp

[–] Phoenix3875@lemmy.world 3 points 1 year ago

Yes. I'm not a frontend dev, so not familiar with JS code (let alone an obfuscated fragment), but according to this HN comment, it's used for a different ad block detection function.