Guys, guys, guys!
"Speed" is a measure of how fast you're going in your car down the road. One does not talk about network's with regard to "speed" as the speed is very constant on each media (ie: fiber optic, copper, wireles) and refers to how fast the electrons, or light, or radio waves travel through the media in question.
Networks are measured in "bandwidth" which is: "the measure of how much data can pass any one point in a network in one second"
Getting a bigger bandwidth package from your provider doesn't make your connection "faster" It simply means you can move more data in the same amount of time.
Upgrade your 10 Mbps copper connection to 100 Mbps You're not "going 10 times faster" (the electrons still travel at exactly the same speed within the copper wires regardless of how much bandwidth you have available) but are in fact moving 10 times as much data in the same amount of time. Or, 10 times as much "throughput".
Sorry but it's a pet peeve of mine.
Firstly, wireless is inherently susceptible to more latency and lag than a wired connection and therefore does not perform as well (reliability/consistency) as a wired connection. So, if the OP is talking about wireless inside his home, my suggestion is to use a wired connection instead of wireless for the streaming device.
If your internet connection as provided by your ISP is wireless, there's not a lot you can do about it. I will say this, I live in a rural area and a lot of my friends and coworkers live out in the country and have a wireless provider and none of them seem to have issues with streaming. I live in town and have a 6 Mbps (copper) internet connection and my home theater system is connected to my LAN wirelessly and I have no problems whatsoever streaming Netflix. With one exception. When Netflix servers are busy, I can have problems getting shows to load but once they do, I've never had them stall, stop or pause during play
My point being, it may be your streaming device that's the issue or else a saturation issue. Do you have 4 kids all streaming or downloading big files at the same time while you try to watch Netflix with the wife? If so, that's your biggest issue right there. Nothing chews up bandwidth like streaming videos and/or downloading huge data files.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.