OP,
OK, do not panic, by the above advice. First of all, you have to ask yourself what quality level you are looking for. If you want streaming to be on par with your CD sound quality, then you probably need to carefully choose a high quality streamer on the order of components in the rest of your system. So, I’m thinking an Aurender N150 or better yet Aurender N200. Then you will not have to play with your routers and become a IT geek. If you get a high quality streamer, then it will make up for any deficiencies in your network.
The way I look at it you can buy a cheap streamer... think Blue Sound and put a couple grand Into your network and be your own IT guy or you can buy a high quality streamer, it will cashe the incoming files, isolate the noise on your network and produce outstanding sound or you can fiddle with your network. I was in IT for 40 years... I prefer to plunk down a box and listen to great music.
I have a wall wart wifi extender ($59) plugged in next to my system with my Aurender streamer plugged in to it. It sounds as good as my $45K analog side. So, you need not play IT guy unless you want to.
You can see my systems under my UserID. I have owned many streamer. I now own two Aurender streams.