Question Pc speeds being capped at 400mbps when I pay for 1200mbps

[vSlzzy]

When I check my speeds on a wired CAT8 ethernet cable my mbps is capped out at 400mbps when I pay for 1200mbps, I have tried all the troubleshooting to fix it. My router and modem are capable for gigbit speeds why am I stuck on 400mbps. My Iphone was also able to hit speeds up to 600mbps on wireless.

 

[drivinfast247]

When I check my speeds on a wired cat8 ethernet cable my mbps is capped out at 400mbps when I pay for 1200mbps, I have tried all the troubleshooting to fix it. My router and modem are capable for gigbit speeds why am I stuck on 400mbps

What "cat8" cable?

 

[vSlzzy]

When I check my speeds on a wired cat8 ethernet cable my mbps is capped out at 400mbps when I pay for 1200mbps, I have tried all the troubleshooting to fix it. My router and modem are capable for gigbit speeds why am I stuck on 400mbps

What "cat8" cable?

Cat8 ethernet cable, The newest ethernet cable above cat7

 

[USAFRet]

Cat8 ethernet cable, The newest ethernet cable above cat7

And quite likely non-standard.
Link to where you bought it?

 

[vSlzzy]

And quite likely non-standard.
Link to where you bought it?

https://www.amazon.com/UGREEN-Ether...ible/dp/B09TDGFSMC?ref_=ast_sto_dp&th=1&psc=1

 

[vSlzzy]

And quite likely non-standard.
Link to where you bought it?

My Iphone was able to hit speeds up to 600+ on wireless btw.

 

[bill001g]

Do you have another machine in your house you could copy a large files between. You can also try a old line mode command called IPERF between 2 machines in your house.

Check that you do not have any so called "gamer" network software installed. This comes bundled with the bloatware you find on motherboards and video cards. A common name is cFosSpeed. You want to uninstall any software like this.

Does your pc have a 2.5g ethernet port. Some of the very early chipsets from both intel and realtek where defective and could only partially be fixed with driver updates. This is almost 2 years old so if your board is newer it likely has the newer chips.

... see you updated the cable while I typed. Almost all "cat8" cables you find on amazon are fakes. These generally are only used in high end data centers and the you get from say HP or DELL. Most the ones I have seen are listed in the $30-$50 range so getting 2 for $10 is suspect. I would try any other cable you have other than those cat8 ones to see if it makes a difference. You do not actually need anything better than cat5e. Buying cables with higher numbers just makes your wallet thinner with no performance improvement.

 

[vSlzzy]

Do you have another machine in your house you could copy a large files between. You can also try a old line mode command called IPERF between 2 machines in your house.

Check that you do not have any so called "gamer" network software installed. This comes bundled with the bloatware you find on motherboards and video cards. A common name is cFosSpeed. You want to uninstall any software like this.

Does your pc have a 2.5g ethernet port. Some of the very early chipsets from both intel and realtek where defective and could only partially be fixed with driver updates. This is almost 2 years old so if your board is newer it likely has the newer chips.

... see you updated the cable while I typed. Almost all "cat8" cables you find on amazon are fakes. These generally are only used in high end data centers and the you get from say HP or DELL. Most the ones I have seen are listed in the $30-$50 range so getting 2 for $10 is suspect. I would try any other cable you have other than those cat8 ones to see if it makes a difference. You do not actually need anything better than cat5e. Buying cables with higher numbers just makes your wallet thinner with no performance improvement.

I dont have any software installed regarding "gamer"
Is this a 2.5g ethernet port? intel(r) ethernet connection i219-v
And I have a cat5e cable in my house which I can use.

 

[bill001g]

i219 is a 1gbit chipset works fine. It was a i225 I think that had the issue. It is said they fixed it with the rev 3 or higher hardware. They also had a issue with the i226 but that was drivers it seems.

 

[vSlzzy]

i219 is a 1gbit chipset works fine. It was a i225 I think that had the issue. It is said they fixed it with the rev 3 or higher hardware. They also had a issue with the i226 but that was drivers it seems.

I just tested my speed again with the cat5e cable and I was hitting 445mbps download and 45 upload. I tested on my phone again as well and hit 448 mbps

 

[bill001g]

Does your router have the ability to run speedtest on the router itself. Some of the fancy ones have that feature now days.

Wifi is very hard to get fast speeds. I am somewhat surprised you get 600 sometimes with a phone even close to the router.

This makes is hard to test this. Another device with ethernet would give you a clue if it is your pc or something farther down the path.

A couple things you can blindly try just to see if it makes any difference. Try to boot a linux USB image. These run completely from the flash and most have a browser preinstalled so you can run normal speedtest. If your modem and router are seperate maybe try to plug directly into the modem. You might need to power cycle the modem when you change devices. It is not common for a router to limit traffic but if you were using say firewall or parental control features it could. You could also try a factory reset on the router and only set the admin and wifi passwords. It is not very likely it is a router issue.

 

[vSlzzy]

Does your router have the ability to run speedtest on the router itself. Some of the fancy ones have that feature now days.

Wifi is very hard to get fast speeds. I am somewhat surprised you get 600 sometimes with a phone even close to the router.

This makes is hard to test this. Another device with ethernet would give you a clue if it is your pc or something farther down the path.

A couple things you can blindly try just to see if it makes any difference. Try to boot a linux USB image. These run completely from the flash and most have a browser preinstalled so you can run normal speedtest. If your modem and router are seperate maybe try to plug directly into the modem. You might need to power cycle the modem when you change devices. It is not common for a router to limit traffic but if you were using say firewall or parental control features it could. You could also try a factory reset on the router and only set the admin and wifi passwords. It is not very likely it is a router issue.

What is a linux USB image?
I tried the modem thing and my ethernet wouldnt work.
I factory reset both the modem and the router earlier this week when I first went onto wired.

 

[vSlzzy]

Does your router have the ability to run speedtest on the router itself. Some of the fancy ones have that feature now days.

Wifi is very hard to get fast speeds. I am somewhat surprised you get 600 sometimes with a phone even close to the router.

This makes is hard to test this. Another device with ethernet would give you a clue if it is your pc or something farther down the path.

A couple things you can blindly try just to see if it makes any difference. Try to boot a linux USB image. These run completely from the flash and most have a browser preinstalled so you can run normal speedtest. If your modem and router are seperate maybe try to plug directly into the modem. You might need to power cycle the modem when you change devices. It is not common for a router to limit traffic but if you were using say firewall or parental control features it could. You could also try a factory reset on the router and only set the admin and wifi passwords. It is not very likely it is a router issue.

Also, how can I run a speed test for my router?
I also do not have another device that can use ethernet other than my xbox.

 

[bill001g]

Your router might not have that feature but the ones that do it is just a menu option that you pick.

It is not real important it is just that you still don't know if it is your pc or if it is something else. The phone also being slow "might" indicate it is a common problem like a router issue or your ISP has some setting wrong. Problem is wifi is so inconsistent that you can't be sure.

 

[vSlzzy]

Your router might not have that feature but the ones that do it is just a menu option that you pick.

It is not real important it is just that you still don't know if it is your pc or if it is something else. The phone also being slow "might" indicate it is a common problem like a router issue or your ISP has some setting wrong. Problem is wifi is so inconsistent that you can't be sure.

So what do you suggest I do?

 

[bill001g]

So I missed some of your questions.

It depends on the type of modem. Many times you must reboot the modem, wait for it to come up and then plug your pc in. A modem tend to lock to the mac address of the first device it sees so if you just swap them it will still only want to talk to your router mac address. The only reason for this test is to eliminate the router as the cause.

A linux USB stick is very similar to a windows install image where you can use it to fix or install the OS. I wish I had a exact link for you but it is generally a debugging tool that has all kind of other abilities if you know what you are doing. It will boot the linux os from a USB stick without writing anything to your disk. It generally has a browser installed so you can just run speedtest like you do in windows. I have a really old one but I use it so seldom I have been to lazy to get a newer one. Likely I need to fix this because the idiot secure boot stuff and lack of modern drivers is going to bite me. Maybe someone else that sees this thread has a recent link.

The only real reason you use the linux image is to see if maybe there is something wrong with the windows install. It unfortantly does not tell you what is broken and many times people just reinstall windows and hope that it was some software that was installed or some setting that was changed. Generally if you had another machine that test at full speed then you come to a similar conclusion except running the linux image confirms that the hardware is good.

 

[vSlzzy]

So I missed some of your questions.

It depends on the type of modem. Many times you must reboot the modem, wait for it to come up and then plug your pc in. A modem tend to lock to the mac address of the first device it sees so if you just swap them it will still only want to talk to your router mac address. The only reason for this test is to eliminate the router as the cause.

A linux USB stick is very similar to a windows install image where you can use it to fix or install the OS. I wish I had a exact link for you but it is generally a debugging tool that has all kind of other abilities if you know what you are doing. It will boot the linux os from a USB stick without writing anything to your disk. It generally has a browser installed so you can just run speedtest like you do in windows. I have a really old one but I use it so seldom I have been to lazy to get a newer one. Likely I need to fix this because the idiot secure boot stuff and lack of modern drivers is going to bite me. Maybe someone else that sees this thread has a recent link.

The only real reason you use the linux image is to see if maybe there is something wrong with the windows install. It unfortantly does not tell you what is broken and many times people just reinstall windows and hope that it was some software that was installed or some setting that was changed. Generally if you had another machine that test at full speed then you come to a similar conclusion except running the linux image confirms that the hardware is good.

Hm I see, I really have no idea what im doing when it comes to a linux USB stick at all, Its the first time ive heard of it.
I could factory reset my pc though if you think that could help fix the problem.
Im sorry for how much time this is taking, I just moved/upgraded my internet and im trying to figure out why im hitting 460's instead of 1gig or around it.

 

[bill001g]

Reinstalling windows is kind of a desperate thing to try.

If everything else is working fine maybe just ignore it. You really only need high speed internet to reduce the time it takes to download large files. It depends how much you do that.

In general most people can easily get by with 100mbps. It allows multiple people to watch 4k netflix and youtube streams at the same time and do most other things. Having a faster internet does not make netflix or games run any different. They only use what they need and having more just left unused.

 

[vSlzzy]

Reinstalling windows is kind of a desperate thing to try.

If everything else is working fine maybe just ignore it. You really only need high speed internet to reduce the time it takes to download large files. It depends how much you do that.

In general most people can easily get by with 100mbps. It allows multiple people to watch 4k netflix and youtube streams at the same time and do most other things. Having a faster internet does not make netflix or games run any different. They only use what they need and having more just left unused.

Sorry for the really late reply I got busy, but I tested it on a different comput and I was able to hit 800mbps+