roku, streaming, hulu, vudu, Netflix

my roku reads my speed as 0 or somtimes 1Mbps, when I do speed test on my phone I get 35 Mbps 1ms latency. However I cannot load Vudu at all, I have to sign in to hulu evertime and then hit retry several times before it will load, and now Netflix is acting up. I don't know what to do. Should I but a new roku if so which one? I was wondering if the roku with the ethernet port would work better instead of using my wireless connection like I do now? Please help thank you