Router settings

[SC Tom]

I have an Asus RT-AC1900p router connected to an Arris cable modem for my
network.
I have 2 desktop PC's ( one running Win11Prox64 and the other Win10Prox64),
a Win10Prox64 laptop, and numerous phones, tablets, and Amazon fire sticks
sharing this network.
When I first set up the AC1900, it was "sharing" bandwidth pretty well. I
could download a large file on one device, and all the others would still
have internet functions- I could browse, run on-line games, etc. Now, after
only a month of using this thing, it won't hardly "share" at all. I download
a large file, and try to connect another device, it gives me a "no
connection" error. I have checked my settings, and even restored the
settings to an earlier save, and it still doesn't work like it did.
AFAIK, nothing has been changed on the router or the cable modem. The
individual NIC settings on each device haven't been changed. It's just
puzzling to me why it should work so well for a while, then not.

Any suggestions on what I should check on the router, modem, or any other
settings will be appreciated. Thanks for reading this!

[Marco Moock]

Post by SC Tom
Any suggestions on what I should check on the router, modem, or any
other settings will be appreciated. Thanks for reading this!

Did you connect the computers via wireless network or via cable?

[SC Tom]

Post by Marco Moock

Post by SC Tom
Any suggestions on what I should check on the router, modem, or any
other settings will be appreciated. Thanks for reading this!

Did you connect the computers via wireless network or via cable?

They are connected via cable, CAT6.

[Marco Moock]

Post by SC Tom

Post by Marco Moock

Post by SC Tom
Any suggestions on what I should check on the router, modem, or any
other settings will be appreciated. Thanks for reading this!

Did you connect the computers via wireless network or via cable?

They are connected via cable, CAT6.

ok, do you download the same way?
Be aware that UDP doesn't have flow control, so if you use any protocol
that used UDP it might be a good idea to limit the download rate in the
software.

[SC Tom]

Post by Marco Moock

Post by SC Tom

Post by Marco Moock

Post by SC Tom
Any suggestions on what I should check on the router, modem, or any
other settings will be appreciated. Thanks for reading this!

Did you connect the computers via wireless network or via cable?

They are connected via cable, CAT6.

ok, do you download the same way?
Be aware that UDP doesn't have flow control, so if you use any protocol
that used UDP it might be a good idea to limit the download rate in the
software.

What do you mean by "same way"? I don't download using wifi, only through my
ethernet connection.
My larger downloads are mostly games. As you probably know, most games are
pretty darn huge any more (whatever happened to DVD's, LOL?), so it takes a
good while to DL one. They're legit games, not pirated hack jobs from one of
those sites.
What I don't understand is that I used to get 100+ Mbps downloads and was
still able to use my wifi devices without getting the "no internet
connection" error on them, and on my other wired PC's. Now, I'm getting
75-80Mbps, and nothing else on my network can get a reliable connection.
Very aggravating!
I'm about ready to restore the router to factory defaults and start over.
It's just very puzzling to me when it really shouldn't be :-(

[Marco Moock]

Post by SC Tom
My larger downloads are mostly games. As you probably know, most
games are pretty darn huge any more (whatever happened to DVD's,
LOL?), so it takes a good while to DL one. They're legit games, not
pirated hack jobs from one of those sites.

Many game downloaders use Bittorrent and that can use UDP. Is there a
way to limit it the download rate in the game?
If you have 100 MBit/s down, set it to 95 and you should still be able
to browse the web on other machines. Also, make sure the upload isn't
that high, some of the game launchers also upload the files to other
players.
If you browse the web with HTTP/HTTPS, TCP is being used that has a
flow control. It will limit the amount of segments being transmit per
second if the ACK segments can't go out in realtime.
So limit the upload in your game launcher too, e.g. to the half of the
available bandwidth.

[SC Tom]

Post by Marco Moock

Post by SC Tom
My larger downloads are mostly games. As you probably know, most
games are pretty darn huge any more (whatever happened to DVD's,
LOL?), so it takes a good while to DL one. They're legit games, not
pirated hack jobs from one of those sites.

Many game downloaders use Bittorrent and that can use UDP. Is there a
way to limit it the download rate in the game?
If you have 100 MBit/s down, set it to 95 and you should still be able
to browse the web on other machines. Also, make sure the upload isn't
that high, some of the game launchers also upload the files to other
players.
If you browse the web with HTTP/HTTPS, TCP is being used that has a
flow control. It will limit the amount of segments being transmit per
second if the ACK segments can't go out in realtime.
So limit the upload in your game launcher too, e.g. to the half of the
available bandwidth.

I found a QoS setting in this router that my old one didn't have. By setting
it to "Traditional QoS", I can give it an upload and D/L limit. I set the
U/L to 30Mbs, and the D/L to 100Mbs and everything seems to play nice with
each other :-) I DL'd a 10Gb file, and all of my other devices had good
online access to email, games, and the internet. I'll leave it like this and
see if it lasts.
Thanks for your input. I probably wouldn't have thought of the QoS settings
if I hadn't followed your advise of limiting the streams. I'll post back in
about a week with how everything has held up.
Thanks again for your input!

[SC Tom]

Post by SC Tom

Post by Marco Moock

Post by SC Tom
My larger downloads are mostly games. As you probably know, most
games are pretty darn huge any more (whatever happened to DVD's,
LOL?), so it takes a good while to DL one. They're legit games, not
pirated hack jobs from one of those sites.

Many game downloaders use Bittorrent and that can use UDP. Is there a
way to limit it the download rate in the game?
If you have 100 MBit/s down, set it to 95 and you should still be able
to browse the web on other machines. Also, make sure the upload isn't
that high, some of the game launchers also upload the files to other
players.
If you browse the web with HTTP/HTTPS, TCP is being used that has a
flow control. It will limit the amount of segments being transmit per
second if the ACK segments can't go out in realtime.
So limit the upload in your game launcher too, e.g. to the half of the
available bandwidth.

I found a QoS setting in this router that my old one didn't have. By
setting it to "Traditional QoS", I can give it an upload and D/L limit. I
set the U/L to 30Mbs, and the D/L to 100Mbs and everything seems to play
nice with each other :-) I DL'd a 10Gb file, and all of my other devices
had good online access to email, games, and the internet. I'll leave it
like this and see if it lasts.
Thanks for your input. I probably wouldn't have thought of the QoS
settings if I hadn't followed your advise of limiting the streams. I'll
post back in about a week with how everything has held up.
Thanks again for your input!

Using the QoS setup allows everyone to access the internet while DL's are
going on, but it did slow the DL speed somewhat. Not enough to be a bother,
but still. . . I'd like to have full speed there, too. I can live with it
though.
Thanks!