How does one determine whether slow streaming speeds are coming from your home or the recipient?

Hi guys,

When I am at my parents house,, streaming stuff is so slow. When running a speedtest it shows speeds of 25MBs download, 5mbs upload. It is 'fibre' internet that they have.

However, I am wondering how one can determine if the slowness is our side or the sender who we are viewing from. How does one determine whether it is our side? What tools can I run? Wireshark?

Thanks for helping
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Gerwin Jansen, EE MVETopic Advisor Commented:
David FavorLinux/LXD/WordPress/Hosting SavantCommented:
Provide the name of the streaming system you're using also.

For example, services like Amazon + Netflix + YouTube work most of the time, so slowness is likely your ISP.

Some other streaming services as just glitchy most of the time.

You could use tshark (Wireshark command line tool), scoped to your connection, then look at whether inbound or outbound packets are pausing.

Most likely, this is due to the streaming service you're using, as most players + Set Top Boxes (Roku, Apple TV) have buffers built in to reduce this problem.
David Johnson, CD, MVPRetiredCommented:
25/5 is rather slow.  Your parents probably have the cheapest plan that the isp puts out.
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WORKS2011Managed IT Services, Cyber Security, BackupCommented:
25/5M should work fine because you're using the download speed (25M). The 5M (upload) is used when you're offsite making a remote connection into your home network.

My thinking is your modem is the problem. Two options, 1. call your ISP and tell them to place their router in full bridge mode and go out and buy a gaming router. These control packets at the MTU (Maximum Transmission Unit) which determines the size of the packets than traverse on your network and are designed to allow larger packets for gaming. 2. access the router you have in place now and change the MTU setting yourself.

At an elevated command prompt type ipconfig /all and you'll see a screen like this, note the default gateway.
ipconfigGo to your browser and type in the default gateway IP address. This will pull up the router your ISP installed. It's likely you'll need password that's located on the device. Please share the router make and model and I'm happy to walk you through the steps to change the MTU settings.

From an elevated command prompt run ping -f -l 1500 and another at 1300 (see below) check if the results timeout or not. This is how you determine how the MTU is configured. The command finds the lowest setting on the route to Amazon, if it times out at 1300 test again at 1200 until it returns a ping.
Note, you don't have a true fiber network at your parents house you have shared fiber. Good news it's fiber technology and not coax. Bad news it's shared and the dedicated portion is only configured to a node either leading into the neighborhood or say if its a condo the node is likely split up even more as it splits off into each condo. Point is, it's shared throughout the neighborhood/complex meaning the more users the less bandwidth. This is why it's good sometimes and slow at others. Depending on how split your ISP has your service there may not be anything you can do about it.

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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
To expand on David Johnson's comment of your connection being slow.

25M may seem fast + it is, only if the connection is stable. Most ISPs packets jitter (stop + start erratically). This applies to whether you have 25M down or 300M or 1G.

WORKS2011 brings up a good point too. Best to always run your ISP hardware in bridge (passthrough/dumb) mode + disable all WiFi facilities provided by your ISP hardware. Get a high speed, rock solid modem for your Ethernet connections + WiFi connections.

Also, make sure all your gear, especially your ISP hardware has good airflow around the device, as sometimes hardware becomes unstable if it heats up.
David Johnson, CD, MVPRetiredCommented:
you mentioned your internet and your parents internet.. are you running a media server from your home and accessing it while at your parents?  If so then you are at the mercy of your home internet's upload speed.
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