AT&T U-verse → Uverse throttling during prime time CST ??

I have uverse 45mbps. I have my streaming home movies and videos I share with brothers/sisters via plex on a vps 91.121.X.X box. All of the families that are on comcast have no problem streaming. Everyone on uverse gets there stream capped during prime time to the server to about 825kbps.

I setup vpn on my pc and created a tunnel to the server. Hard coded my plex server in my roku device to point to my local pc (that has the tunnel). Tested in prime time and I have no problem with speed through the tunnel. I drop the tunnel and reset roku/plex back to normal and again buffering 825kbps max.

I have no problem creating a tunnel on my end but trying to show non technical users (brother) how to set this up is next to impossible. I have spent some time trying to explain to uverse helpdesk support but it seems to be a lost cause.

I have no problem with netflix/amazon/huluplus

My theory is uverse sniffs the traffic sees content as video see's it is not on the list of prime ip/segments drops it to low priority during prime time and walla endless buffering. When a VPN tunnel is created it can't be sniffed so it can't be prioritized so it is sent at full speed.

Anyone else having the same slow speeds if you have setup a vps video streaming server?

Sounds a lot more like a saturated upstream peering point honestly.

A VPN also takes a different route. I see similar with YouTube and IPv6 tunnels (unlike VPNs, traffic in those tunnels can be "sniffed").

Is the VPN something you setup on the VPS or is with a VPN provider?

I setup point to point (no provider in between).