Internet Performance Issue with Netflix

How does your SmartTV connect to your U-verse network?

How do you know that your "internet service goes below 1 mbps"?

Have you tried streaming Netflix from a PC?  How does that perform? 

It connects over Uverse wifi AP.  I use the AT&T speed test after all our other devices can't or can barely connect.  Netflix itself streams fine on the TV, our computer, other TV using chromcast, etc.

This TV is configured to connect identically (i.e. same SSID, security, etc.) to the Chromecast on the other TV that streams Netflix okay?

What brand/model is this SmartTV?

Chromecast has it's own internal wifi so the settings wouldn't be the same.  But it doesn't cause any internet performance issues with other devices while in use.  The smart TV is a Visio E320i-B2 and goes over the AT&T WAP.

In case Jeffer has stepped away-

The WAP feeds only the TV side of the Vizio. The smart side is either wired or "internet wi-fi"

TV is fed from the U-verse STB - HDMI to the TV. Smart is a network jack or wi-fi.

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@jtessenburgh wrote:

Chromecast has it's own internal wifi so the settings wouldn't be the same.  But it doesn't cause any internet performance issues with other devices while in use.  The smart TV is a Visio E320i-B2 and goes over the AT&T WAP.

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So... you have the SmartTV plugged into the RJ45 jack on the back of a Wireless Receiver?  This is not supported and can be "a bad idea."

Since the Visio E320i-B2 has built-in wireless, I would configure it exactly the same as the Chromecast's network access.

If I have misinterpreted, please explain further.