Hello @Hhaad 

If you apply the following it should work :

Vlan 300 is for internet and vlan 640 is for IPTV.

 Thanks. On your screenshot its showing you are on the IPTV tab.  Do ineed to use a different tab and apply the settings there instead?

I applied the settings and the Internet works now. I'm surprised these settings fixed it since its in the IPTV twb and I'm not using iptv. 

 The problem i have now is that a speed test only shows 25mbps but i have the 1000mbps package. I'm not expecting 1000mbps it should be much faster still.  Is this because of thr settinfs I used ? Does it affect speed?

@Hhaad 

Use the following settings

And if you do not use IPTV VLAN 640, you can remove it like this.

Hi,

I have the same issue as mentioned by @Hhaad. I followed @Pieter_B’s instructions but my internet speed dropped to half after I replace the Zyxel router by my Asus RT-AX86S.

Do you know what could be the issue?

Thanks in advance

Hello @pedev ,

This is a very old post and i do not use the ASUS anymore, but i have a pfsense computer running for my network.

The last time i used the ASUS, i noticed also some problems to get the full speed. Looked like the firmware updates at that time causing that problem, because at that time i reconnected another router and als was back to normal.

Was reading something about the ‘NAT Acceleration’, but that has a new name ‘flow cache’.

Most throughput problems were solved with this ‘NAT Acceleration’ in the ‘Auto mode’.

The only problem is however, there is no webui option to manually enable/disable it. This is done automatically, but is disabled if some features are used (See linked info). 

Ref : I dont have Nat Acceleration (ASUS RT-AX82U)