I have my Sharp Smart TV hooked up to an Ethernet cable instead of using my WiFi.
If your Samsung is like the one I used to have, there’s an ethernet jack in the back.
Use it.
It makes *all* the difference.
802.11ac promises blistering speeds, but many consumers are just now getting around to upgrading to 802.11n, leaving many to wonder if the new version is worthwhile.
This outpaces most typical home broadband connections by some margin. Assuming you have the hardware to support this standard (you need it in both your router and all your computers) it means the broadband speed is now the bottleneck, not the Wi-Fi speed.
The major benefit of Ethernet is now gone.
http://www.makeuseof.com/tag/wi-fi-vs-ethernet-which-should-you-use-and-why/
The cost to get a decent AC-based wireless router, coupled with getting AC-based versions of your Amazon Fire or Roku boxes, is very expensive versus the perfectly adequate wired Ethernet cable you have (and probably bought for $10-$20).
When you upgrade, try to get AC-based cards and router everywhere.
OK. You plug the ethernet cable into the back of the TV. What do you plug the other end of the cable into?