Windows 10: My PC is slowing my WiFi connection to a crawl for every device in the network

Hi there!


My computer is slowing the internet connection for EVERYONE, here's the story:


My internet is around 30 mbps yes, I know it's slow, believe it or not it's rather enough for me and works fine throughout my house with speeds in the range of 15-25 mbps in most places. However, the signal doesn't reach my PC properly and moving the modem is not an option, so I bought a TP-Link Re200 wifi extender, I mostly use it to connect my XB1X via ethernet, works like a charm too. Now, I decided to connect my PC via ethernet as well through this setup. As soon as my PC is turned on, before it even finishes booting up, the WiFi speed throughout the house drops to around 0.5-2 mbps. The instant I unplug the ethernet cable from the wifi extender meaning I leave my PC without internet connection, the speed goes back up, keep in mind this is even before booting finishes and I log into my Windows account. Also, this problem is not ALWAYS present, sometimes it works ok, sometimes it doesn't. I just went WiFi through the extender and connected to the XB1X via ethernet and the network is fine, then I reconnected my PC via ethernet through the extender and now it's working fine. I discard the extender being the problem because it would affect everything by being on regardless of how I connect to it... right?


Anyway, I have now definitely connected via wifi through the extender, and it all seems to be going well, but I want to understand what the problem might be so that I may address it.

:)

 

WiFi Connectivity

Email Send/Receive was running slow on network wifi and was also slowing other network device connectivity to a crawl. Ran connectivity diagnostics. Now cannot connect to network. Get error "Cannot connect to network." Started hotspot normally used for
travel and no connection problems. All other devices in the house are connected to network via wifi. Windows 10 Home. Dell XPS L511Z.

 

Wifi Very Slow

Hi,

The following are some reasons that may cause of the slow WiFi connection.

• Corrupted or incompatible drivers.
• Missing updates.
• Network connection settings.
• Hardware or software problems.
• Inappropriate distance from the router or obstruction.
• Interference with other devices.

To isolate the concern, have you checked if the issue persists with other devices? For now, we suggest that you follow the troubleshooting steps provided in this
article.

 

Small business Wifi Network for 20-30 Devices?

I have been looking at this exact problem myself with the same range of numbers. I've found there are a wide range of choices and performance of the network very much depends on how much money you're willing to put into it.

Our wifi consisted of a single modem/router and the devices were only requesting internet access, the problem we were getting was either devices getting dropped off the network or just very little internet access at all when it was connected. From doing some studying I concluded that i could improve the performance by separating the roles, having a modem dealing with the connection to the outside world and DHCP and having a more powerful router handle the wireless devices (the router I was looking at was the model down from your suggested one, the Asus RT-N66U), you could probably go one further and add a low spec'd server box dealing with DHCP, DNS, etc. This was the cheapest option but left no real room for scaling up devices.

The other was as has been suggested, getting a wireless controller/gateway with multiple access points, obviously the cost scales higher but you also increase the overall capacity of the network with good performance, and usually with a good controller you can further add more access points to increase range/devices.

I think in this case it's very much you get what you pay for.