Rule # 3265
If Ever Possible; ALWAYS USE ETHERNET over WIFI.
Where my tv, blue ray, directv receiver, PS, and roku are; they all had WIFI capability. FORTUNATELY for me; my Directv Receiver ONLY HAD Ethernet. That meant, if I wanted Internet access for my Directv Receiver, I would need a wireless bridge. I had a 5g/2.4g Linksys wireless bridge available and used that for the directv receiver. The 5g wireless from my router is only about 30 feet away. Directv works great on it.
Wanting to experiment, and knowing that a quality bridge has better WIFI than most internal WIFI transceivers; I plugged my blue ray, PS, and new OLED65B7P into the wireless bridge via ethernet instead of their built in WIFI. Along with the Directv receiver. The bridge has a built in 4 port ethernet switch.
Freakin-A. SO MUCH BETTER. The blue ray, OLED, PS, and Directv are so much happier. I've had the directv, ps, and blue ray in the bridge for the last 2 years. I only recently bought the OLED. I tried the WIFI first in the tv. It "Worked", but there were buffering and lagging. Both 2.4 and 5g. I put it in the bridge via ethernet and it's perfect. Then again, I really don't NEED internet to my tv, because I will NEVER use the built in apps. (It will never compete with quality of a Roku, Apple, Firestick, etc. Sorry...... but they simply can't make apps in a tv compete with a dedicated streaming media player. Not yet.
My Roku ultra, does have a great 5g wifi, so I do use that instead of using the bridge for network connectivity. But the tv, directv receiver, ps, and blue ray; they ALL go into the bridge. But, you get what you pay for. My wireless bridge is about $175. But like a router, it can do QOS, it has wireless speeds of up to 1300mbps. Some people buy "Cheap" ethernet to wireless adapters for $19-$29 and say "THESE SUCK". You get what you pay for.
P.S. The ONLY thing in my house I use WIFI for, other than this Bridge and Roku are tablets and smart phones. ALL tv's, desktops, laptops, security cam, etc... ALL USE ETHERNET. If I have to use WIFI, like for the theater equipment, I use a quality wireless bridge. Not "Normal" quality wifi. Even converting from ethernet to quality wireless bridge is better than most built in wifi. (Again, QUALITY bridge; not a cheap ethernet to wifi adapter.)