Youtube buffering horrible quality

recently i have received a new router from Fios. After getting it all set up and running i now have extremely bad issuess with loading youtube (this was never an issue with the old router). So i chatted with someone from Verizon about it. we went through every single step you could think of. even having Verizon release and renew me under a new ip address. NOTHING has done anything to help in the slightest. this is over a LAN connection with a G3100. At this point i dont think i want to move forward with the service but i figured i would post here as a last hail marry before canceling

Accepted answers

Cang_Household

@zodd wrote:
LAN is directly plugged into motherboard. ASUS Q87M-E

That does not directly answer my question whether you are using an Intel NIC or not. I can lookup the motherboard model Asus Q87M-E for you... and bingo, it is using an Intel NIC.

So, Intel NIC does IPv6 TCP checksum offload which breaks your connection.

Go to your network adapter settings, select Intel NIC, configure, and disable IPv6 TCP checksum offload and you are done.

Source: docuware.com

All comments

Cang_Household

Do you have a WAN IPv6 address assigned?

Do you use Intel chip based Network Interface Cards?

zodd1

Yes to IPv6

LAN is directly plugged into motherboard. ASUS Q87M-E

At this point im using my phone because the verizon site no longer loads on my pc

Cang_Household

@zodd wrote:
LAN is directly plugged into motherboard. ASUS Q87M-E

That does not directly answer my question whether you are using an Intel NIC or not. I can lookup the motherboard model Asus Q87M-E for you... and bingo, it is using an Intel NIC.

So, Intel NIC does IPv6 TCP checksum offload which breaks your connection.

Go to your network adapter settings, select Intel NIC, configure, and disable IPv6 TCP checksum offload and you are done.

Source: docuware.com

zodd1

This seems to have worked. No buffering or anything before.

Thank you sir for the help even though i was not the most helpful

@Cang_Household wrote:
@zodd wrote:
LAN is directly plugged into motherboard. ASUS Q87M-E
That does not directly answer my question whether you are using an Intel NIC or not. I can lookup the motherboard model Asus Q87M-E for you... and bingo, it is using an Intel NIC.
So, Intel NIC does IPv6 TCP checksum offload which breaks your connection.
Go to your network adapter settings, select Intel NIC, configure, and disable IPv6 TCP checksum offload and you are done.
Source: docuware.com

DevinC1

Just want to confirm, IPv6 TCP checksum offload. Is the only one? What is highlighted is UDP IPV4. Is there multiple that need to be disabled?

Reaper122

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

aegies@gmail.com

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.

smith6612

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.

R017

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

Thanks!

gs0b

@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.