Bufferbloat

[talbyfish]

Can I heck sort my bufferbloat out, getting a grade  D.

 

I have halted my speeds down to 400 from 800down and 50 from 100 up.

 

any ideas

[Netduma Fraser]

Rather than focusing on a letter grading I'd suggest following this guide https://support.netduma.com/frequently-asked-questions/legacyfaqs/test-your-ping/ while downloading & start with 95% for Congestion Control (set to Always), check results, decrease by 10%, check, decrease by 10% etc, until you get to a value that is pretty good & then try 5% either side of that value to see if it can be improved. Download & Upload on Congestion Control don't have to be the same value & you may have a better experience with differing values. This will be better as it's a real world test and you'll be able to see how your changes effect it in real time and adjust from there.

[talbyfish]

Av tried all sorts mate, had an r1 and used to love how you could give each device there own internet and not share, gutted when I can’t find it on latest r3. 
this is whats happening,  am playing fc25 pinging 12ms to the server, in game ping is 12-15 but when she’s watching Netflix it’s jumping up to 60-70ms. It’s only downloading Netflix at 2.5 or 25 Mbps can’t remember what it said but ave got nearly 600Mbps spare not getting used and it’s still lagging. I could ply on virgin media router and it wouldn’t lag when she was watching. 
 

any ideas?

 

Ping optimiser is telling to to up my download cap so av set it higher

[Netduma Fraser]

That's what Congestion Control should be eliminating, set the speeds you actually get into the router, otherwise Congestion Control will be working off false information. Then adjust Congestion Control to find what's best, if you follow the guide while doing that then there will be no way Netflix will affect you when playing as you've already used similar traffic to get the best results. On top of that you can then use SmartBOOST to prioritize the game/device of course. If needed you can also reserve bandwidth for the gaming device so it always has enough.

[talbyfish]

Trying now, how do I reserve bandwidth. 

[talbyfish]

1 hour ago, talbyfish said:

Trying now, how do I reserve bandwidth. 

On ping plotter av had to drop me speed from 800 down to 260 down, the upload from 110 to 56. 
 

lost a lot of download speed is this normal, back in the r1 days it was always the upload that caused lag but mine is all happening on downloads at the minute

[Netduma Fraser]

6 hours ago, talbyfish said:

Trying now, how do I reserve bandwidth. 

Click the 3 dots icon top right on the SmartBOOST page  
Click Favorites Primary Profile

Click the icon top right of that panel

4 hours ago, talbyfish said:

On ping plotter av had to drop me speed from 800 down to 260 down, the upload from 110 to 56. 

lost a lot of download speed is this normal, back in the r1 days it was always the upload that caused lag but mine is all happening on downloads at the minute

As in you've got Congestion Control down that low or you've actually put your speeds down? Downloads more commonly cause lag compared to uploads

[talbyfish]

OK av been messing bout and can’t get it to work proper, my son is on pc, gaming and chatting using about 3mbps up and down max. I have his pc set to priority all ports 1 to 65335 or what ever it is, also have gaming set to 1000 top priority but when start my Xbox game update he starts lagging instantly yet my download speed is only 200mbps  and my download speed is over 800, should this be happening or am I doing something wrong?

 

might have to reset and start again ??

[Netduma Fraser]

14 hours ago, talbyfish said:

OK av been messing bout and can’t get it to work proper, my son is on pc, gaming and chatting using about 3mbps up and down max. I have his pc set to priority all ports 1 to 65335 or what ever it is, also have gaming set to 1000 top priority but when start my Xbox game update he starts lagging instantly yet my download speed is only 200mbps  and my download speed is over 800, should this be happening or am I doing something wrong?

might have to reset and start again ??

Have you setup Congestion Control? As that is the main feature to prevent devices causing each other to lag

[talbyfish]

Yea, I have found auto doesn’t work so I have had to drop my speeds to 10% download and 50% upload to stop games lagging if someone watches a video or  downloads anything.

Even if the video is only downloading at 25mbps I have over 800 spare but still lags. Am currently using only 80mbps download with always on ticked.

[talbyfish]

Also reserving 20% down and up makes no difference to lag when someone watches a video

[Netduma Fraser]

Are ALL devices connected to the router or do you still have some connected to the hub? Can you provide a screenshot of all the settings you've changed specifically?

[talbyfish]

Nothing connected to hub just r3.

 

[Netduma Fraser]

Switch SmartBOOST back to the basic, not advanced. Where else have you changed settings e.g. DMZ, port forwarding, internet rules etc

[talbyfish]

Nothing else changed, av got some screenshots of bufferbloat with different % settings but am locked out for 15mins on pc wrong password lol but still logged in on phone

[talbyfish]

Xbox is in dmz

 

[talbyfish]

[Netduma Fraser]

Disable the DMZ and take off those reservations then try again. The percentages you got with Congestion Control, that was really the best you found when following the PingPlotter instructions?

[talbyfish]

yes al try ping plotter again now, here are some screen shots i took but might be pointless becouse i have changed the things you said.

[talbyfish]

cant find the pingplotter instructions anywehere

 

[Netduma Fraser]

Having the Xbox in the DMZ while you do those tests is going to skew the results so take that out, you should remove that anyway, then proceed with below.

PingPlotter link/instructions from my 1st response

On 5/24/2025 at 7:08 PM, Netduma Fraser said:

Rather than focusing on a letter grading I'd suggest following this guide https://support.netduma.com/frequently-asked-questions/legacyfaqs/test-your-ping/ while downloading & start with 95% for Congestion Control (set to Always), check results, decrease by 10%, check, decrease by 10% etc, until you get to a value that is pretty good & then try 5% either side of that value to see if it can be improved. Download & Upload on Congestion Control don't have to be the same value & you may have a better experience with differing values. This will be better as it's a real world test and you'll be able to see how your changes effect it in real time and adjust from there.

[talbyfish]

Done all the ping plotter tests again on pc and I get lag spikes when I run a speed test on my iPhone, I need to set my download to 20% which is about 160mbps. This was with YouTube playing and a few twitch streams 

[Netduma Fraser]

Could you provide the screenshot of the best results you got on PingPlotter please?

[talbyfish]

Will when I get time and he not on pc