Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
Your router should be putting out two networks, a 2.4 ghz network and a 5 ghz network. Which network do you have the wii connected to?
Ok, so you are connected to the 2.4 ghz network.
Now, for probably a more important issue. You mentioned you have a comcast dual band modem, that means you h ave comcast service. You know that comcast caps netflix streaming yes?
This has been going on since 2014. By cap, what that means is that after you stream X amount of data from netflix using comcast internet, they buffer your speed for netflix. This is almost certainly what is happening as you said yourself, youtube works fine. And I bet if you tested hulu, it would work fine too. ( for a while )
Im willing to bet if you take that wii to another location that has non comcast internet, netflix will stream fine. Or, if you have a phone capable of providing a wireless hotspot, netflix would even stream through the wireless hotspot from your mobile phone.
And at the beginning of your monthly billing cycle, netflix will work fine again. ( Till you hit the cap )
About the only fix you could do here is call comcast and ask t hem to remove the cap on netflix, or else you want to switch to a new provider. The first line customer service personell will probably either deny, or redirect the issue and claim its something else. It isnt.
A quick google search of Netflix comcast bandwidth limits will sh ow you how widespread the issue is. if netflix is something you enjoy, Id strongly recommend switching to a non comcast internet service if possible.
If you have further questions, let me know.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.
Ive just seen your phone call request. I havent accepted it yet as that would cost you more $$.
Did you want to discuss the information I just sent to you? The reason I didnt outright accept the phone call is there isnt anything besides the above info I can really add. As you mentioned, youtube is working without buffering.. So that tells us that your connection is solid enough to run video. And since you are using comcast and only netflix is b eing affected, this is a clear cut issue which I explained in my last reply.
Please confirm whether you wanted to pay the extra fee for phone support, and if so I can accept that offer and give you a call.
Did you take a moment to google search Comcast, Netflix and Bandwidth?
Again, this has been going on since 2014 with comcast. They cap netflix meaning after you stream x amount a month they severaly reduce the bandwidth streaming speeds which causes buffering. The information I have given you is correct. And current.
Dont believe me? perform a quick google search and you will see that this is a highly publicized issue. Again, you are paying comcast for internet yet they are capping your netflix speed.
If it was some other issue as you stated.. Then neither youtube or hulu would work any better then netflix.
And as you said, you tube runs without issue....
Accessing netflix through a browser on a laptop, allows it to modify the quality / download speed automatically. .Its probably not running in full HD on the laptop.
With that being said, you can try removing netflix and re-addig it to the wii
And to reinstall
Another possibility is this. Since you replaced the router. Its entirely possible that the old router had better range or throughput to the wii then this router does.
How many bars of signal connectivity does the wii get on the current network?
Lets try a test to verify whether this is the wireless router, or something else.
Can you connect your wii directly to the router via an ethernet cord. Then try netflix.. This will tell us if its a router / signal strength issue or something else.