I know there are many threads on this. After applying the final release, my wireless connection was very low and my video streaming from homeserver was jittery and was buffering all the time. i looked at these forum posts and found one person mentioning about QoS. so i checked my router and it was enabled, so i disabled and restarted.
Since disabling QoS, my wireless speed is much better, very seldom hanging while watch video.
IS this known issue? i will try to reset the settings soon and set it up fresh. On my last upgrade i just kept my last settings