OK, with QoS off, My XBox sees 500+ Mbps (wired connection) but my computer is only getting around 90 Mbps on the same LAN (this usually would see 500+)?  The computer is set to "High Priority."  This just started happening in the last week.  And my son's computer is on a 2nd node (wireless connection to the main node), used to see 250-300 Mbps, now only 5-10 Mbps.  Any clue where I can find the settings for these 2 devices?  I'm about at my wits end... QoS on or off makes no difference.