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Re: Youtube buffering horrible quality
Reaper122
Enthusiast - Level 1
‎09-19-2022 07:04 PM

To make this clear for anyone who needs the clarification it is UDP IVP6 you need to disable  

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Re: Youtube buffering horrible quality
aegies
Enthusiast - Level 1
‎09-20-2022 10:18 AM

Disabling UDP for IPv6 worked both for my youtube buffering problems and general image/cookie loading problems after some kind of firmware update was pushed to verizon routers recently. 

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Re: Youtube buffering horrible quality
smith6612
Community Leader
Community Leader
‎09-21-2022 10:24 PM

Yep. This is correct. Google/YouTube, and a few other large providers, use UDP (with TCP as fallback) to speed up video delivery and improve latency of connections. QUIC and DTLS for example. On the Intel NICs you have to disable both TCP and UDP Checksum Offloading for IPv6 to completely solve the problem. Intel's fix is workable but incomplete.

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Re: Youtube buffering horrible quality
R017
Enthusiast - Level 1
‎09-29-2022 07:21 PM

I was having the same issue: did this fix: it worked and I basically yelled, "**bleep**" out loud to nobody O_o

Thanks!

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Re: Youtube buffering horrible quality
gs0b
Community Leader
Community Leader
‎09-30-2022 06:54 AM
@aegies wrote:

Disabling UDP for IPv6 worked both for my youtube buffering problems and general image/cookie loading problems after some kind of firmware update was pushed to verizon routers recently. 

There was no firmware update to Verizon equipment.  This issue is completely solved by disabling UDP and TCP checksum offload in the device driver for Intel network interfaces.