The solution: I don't know why exactly but by disabling route-cache cef (no ip route-cache cef) on the vlan interface did the trick and the youtube is very fast again. This seems that it does not affect the routing capability of the router in compari...

I tried different cef optimizations but the same :( , but I don't use multiple gateways just the dialer1 to my isp, so no load balance, just a single default route. I have a 2811 laying around somewhere and I will give it a try to if it is the cef pr...

Hi, I tried the buffer tunning still the same problem. The proxy is small workaround on a single smartphone as it is manual entered to the specific wifi ssid, it is not a real solution just something to consider in the possibilities.    Now I have an...

Ok below are my show buffers output. In my try to capture data from the youtube app I tried to use a proxy and noticed that by using my isp proxy the problem stops, I think that it might help narrow the problem. Still I have not captured data but it ...

I removed ipv6 from dialer1 and added the ip tcp adjust-mss 1452 but still the same. My conf was a little messy cause I was testing and experimenting but as I said before even with simplest conf the same thing happens. I made my conf as simple as I c...