Slow WiFi speed on *one* PC

[Myself]

Hello Peter and thanks for taking an interest. As soon as I finish this reply I will follow your instructions and publish that report.

As per Rusty’s suggestions I removed Nord VPN from the machine last night through the add/remove programs facility. I noticed that I immediately got a quadrupling of speed - approaching 500 Mbps and this lasted for an hour or so until I shut the machine down. This morning I came to it and I’m really disappointed to report that the problem seems to be back and I get that same 112 Mbps (+/- 2 Mbps) as before.

I also created a new user profile and ran a series of speed tests within that. I got he exact same result.

Additionally to all of this I fired up the adjacent W10 PC (they are both on the same work surface) as I occasionally do to cross-check the speed. Low and behold for the first time this second PC also seems to be throttled at this time. The second PC has never had any VPN application on it and is a pretty lean-running machine in terms of programs installed - it is basically just the family admin PC. I have genuinely never encountered this situation over months and months of testing. Maybe that is just bad timing on my part but as we speak my iPhone is sat right here on the desk and is happily getting a solid 626 Mbps.

** So I just cycled the power on the gateway. I’m now getting the faster speeds again on both PCs. Clearly I am no expert (excuse the layman’s terms) but it looks as though this is something to do with how the gateway handles W10 PCs.

Peter, I’m not sure of to turn off Ipv 6 but I’ll find out and do it.

[Myself]

Peter - http://speccy.piriform.com/results/u...Qiq2p0QpKrenU5

[Myself]

Update: I disabled IPV6 per PeterOz’s advice. After a reboot there is no change and speed is still as before. Furthermore the second PC is getting throttled back also to a similar speed whilst an iPhone and an iPad running a speed test from the same location both get 690 Mbps.

It seems that the only temporary solution is to regularly cycle the power on the router. That seems to get the speed back again until the PC(s) are restarted.

[PeterOz]

could we please have the model of you modem
Note: Looking for your Gateway model number? Review the equipment’s bottom panel or visit your Internet Service page on My Account or xFi.

[Myself]

Hi Pete,

Arris Group, Inc TG4482A.

[Myself]

Another thought/question. Since the problem is confined to the WIFI connection only (ethernet connection works fine) I was debating whether or not a mesh device or extender such as the xFi product my ISP offers might help. Obviously the problem is not a signal strength/coverage issue as I am able to achieve higher speeds under certain circumstances so the deployment of a mesh device wouldn’t be in the traditional sense. Instead I was wondering if I could make use of an ethernet connection into the xFi pod itself which I can locate near the PC, the question being would this behave like a direct ethernet connection to the main router or would it still handle a connected device as if it was on WIFI…?

A quick follow-up on the modem/hub itself: I have been unable to gain access to the admin function of the router because the username/password are incorrect. I have never changed these but I believe the modem to be a renewed pre-owned product from the signs of wear on it. It might be that they never fully reset it, but I can’t seem to get any help from the ISP on this. They have offered to send me another modem (…again) so I might try that also.

[Rustys]

Lets get another IP Config

Open an Admin Command Prompt and type or copy and paste the following command.
ipconfig /all >"%userprofile%\desktop\ipconfig.txt

Attach or copy and paste the information.

[Myself]

Rustys, as requested, thanks…

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-C5M6RLU
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.fl.comcast.net

Ethernet adapter Ethernet:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (7) I219-V
Physical Address. . . . . . . . . : 30-9C-23-D5-57-BF
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #2
Physical Address. . . . . . . . . : DC-41-A9-CA-3D-67
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #3
Physical Address. . . . . . . . . : DE-41-A9-CA-3D-66
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . : hsd1.fl.comcast.net
Description . . . . . . . . . . . : Intel(R) Wi-Fi 6 AX200 160MHz
Physical Address. . . . . . . . . : DC-41-A9-CA-3D-66
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.0.0.9(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, October 26, 2021 1:52:18 PM
Lease Expires . . . . . . . . . . : Friday, October 29, 2021 1:26:12 PM
Default Gateway . . . . . . . . . : 10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DNS Servers . . . . . . . . . . . : 75.75.75.75
75.75.76.76
NetBIOS over Tcpip. . . . . . . . : Enabled

[Rustys]

Are you connecting to the 2.4Ghz or the 5Ghz WiFi

[Myself]

Are you connecting to the 2.4Ghz or the 5Ghz WiFi

5Ghz

[Rustys]

The IP Config looks fine.

Try the 2.4 Ghz to see if there is any difference if you have not already. Some times Xfinity will configure the 2.4/5 same user name and password on both and the system will bounce between the two.

You stated that with the second user you got the same results as the primary user. If the internet is still slow or was working better since the removal of the VPN.

[Myself]

The IP Config looks fine.

Try the 2.4 Ghz to see if there is any difference if you have not already. Some times Xfinity will configure the 2.4/5 same user name and password on both and the system will bounce between the two.

You stated that with the second user you got the same results as the primary user. If the internet is still slow or was working better since the removal of the VPN.

Thanks Rusty. I did actually split the bands out into two separate networks and did this a while ago while troubleshooting the same issue.

I got the same performance under the second user, I’m afraid.

As to the VPN question this is interesting. Right - as we speak - now I am getting 290 ish Mbps so there has been a marked change since the VPN program was uninstalled. However, last night after removing it, I did observe better speed for longer but this morning it was back down to 112 Mbps again so I’m not sure what, if anything, dropping the VPN did. Maybe it did something and I will continue to monitor it.

In summary I have seen some improvement but the machine still has this tendency to want to go to 112 occasionally. I suppose I should say that I did have this problem before installing the VPN in any case.

But I’m super grateful for all you guys help with this. What are you thoughts on the mesh/extender question? I know the extender is equipped with an ethernet port so I was wondering if I located that nearby in a wall socket and then hardwired the PC into that it might be like wiring straight into the modem. Or is it likely just going to be treated by the main modem as WIFI? I know that’s probably I totally idiotic question but I can’t find out the answer to that.

[Rustys]

But I’m super grateful for all you guys help with this. What are you thoughts on the mesh/extender question?

The only thing in my opinion is that may help yet if you are as close and you state and no other system is having the same issue even at a distance do not think that it will help. Yet I have never used one so I may not be correct and @PeterOz may have better Information than me.

Going to wait and see what Peter has to add before suggesting doing the factory reset or maybe we can just do a reset on the WiFi from with in the modem.

You have checked all the setting in the modem to make sure that nothing is wonky under Parental Control.

[Myself]

The only thing in my opinion is that may help yet if you are as close and you state and no other system is having the same issue even at a distance do not think that it will help. Yet I have never used one so I may not be correct and @PeterOz may have better Information than me.

Going to wait and see what Peter has to add before suggesting doing the factory reset or maybe we can just do a reset on the WiFi from with in the modem.

You have checked all the setting in the modem to make sure that nothing is wonky under Parental Control.

Thanks again Rustys. I am having a problem getting into the admin panel on this modem because the default username and password don’t match what I have in the manual and what Comcast are telling me it is supposed to be so somehow they must have got changed and that wasn’t me. Otherwise there is limited “advanced” functionality within the xfinity app but I will go back over the parental settings to see if there is something happening there.

Much obliged,

[PeterOz]

I was debating whether or not a mesh device or extender such as the xFi product my ISP offers might help

I would be surprised if this made a difference. All you are doing is moving wifi access from one point to another.
Depending how your connection is setup from the isp you may need a username and password.
With your limited access can you remove all devices in the router? Then turn off all other wifi devices so yours is the only one in the list.
Test.