AX88U slow wifi download speed

[layanx]

Hello,

I have a strange issue with my Ax88u Merlin. When I run a speed test within the router itself, I achieve a full speed of 1 Gbps. However, over wifi, I only get a download speed of up to 300 Mbps, while the upload speed ranges between 800 and 900 Mbps.

I've tried everything and consulted various forums and topics, but I can't find the problem. I've also performed multiple resets, including a nuclear reset.

Could you please assist me further? I'm feeling quite desperate.

 

[ColinTaylor]

Have you enabled AiProtection, QoS or VPN clients?

 

[layanx]

Nope, just minimal setting.

 

[ColinTaylor]

It sounds suspiciously like HW acceleration is disabled. What do you see at Tools - System Information > HW acceleration?

What firmware version are you using?

 

[layanx]

The last one, I will check it this and let you know.

3004_388

 

[ColinTaylor]

Do you get full speed from a client connected to the router via Ethernet?

 

[layanx]

Yes, with Ethernet I am getting full speed.

 

[ColinTaylor]

Yes, with Ethernet I am getting full speed.

Ah, OK. So this is a Wi-Fi-only problem. So probably nothing to do with hardware acceleration.

What link speeds are you getting for the client in System Log - Wireless Log ?

 

[layanx]

HW acceleration	Runner: Enabled - Flow Cache: Enable

SSID: "Internet5g"
noise: -91 dBm Channel: 40/80
BSSID: 049:F5:FA:FC:34 Capability: ESS RRM
Supported Rates: [ 6(b) 9 12(b) 18 24(b) 36 48 54 ]
HE Capable:
Chanspec: 5GHz channel 42 80MHz (0xe12a)
Primary channel: 40
HT Capabilities: 40Mhz SGI20 SGI40
Supported HT MCS : 0-31
Supported VHT MCS:
NSS1 Tx: 0-11 Rx: 0-11
NSS2 Tx: 0-11 Rx: 0-11
NSS3 Tx: 0-11 Rx: 0-11
NSS4 Tx: 0-11 Rx: 0-11
Supported HE MCS:
80 Mhz:
NSS1 Tx: 0-11 Rx: 0-11
NSS2 Tx: 0-11 Rx: 0-11
NSS3 Tx: 0-11 Rx: 0-11
NSS4 Tx: 0-11 Rx: 0-11
160 Mhz:
NSS1 Tx: 0-11 Rx: 0-11
NSS2 Tx: 0-11 Rx: 0-11
NSS3 Tx: 0-11 Rx: 0-11
NSS4 Tx: 0-11 Rx: 0-11

Interference Level: Acceptable
Mode : AP Only

DFS status: state IDLE time elapsed 0ms radar channel cleared by DFS none

Channel Information
----------------------------------------
Channel 36 A Band
Channel 40 A Band
Channel 44 A Band
Channel 48 A Band
Channel 52 A Band, RADAR Sensitive, Passive
Channel 56 A Band, RADAR Sensitive, Passive
Channel 60 A Band, RADAR Sensitive, Passive
Channel 64 A Band, RADAR Sensitive, Passive
Channel 100 A Band, RADAR Sensitive, Passive
Channel 104 A Band, RADAR Sensitive, Passive
Channel 108 A Band, RADAR Sensitive, Passive
Channel 112 A Band, RADAR Sensitive, Passive
Channel 116 A Band, RADAR Sensitive, Passive
Channel 120 A Band, RADAR Sensitive, Passive
Channel 124 A Band, RADAR Sensitive, Passive
Channel 128 A Band, RADAR Sensitive, Passive
Channel 132 A Band, RADAR Sensitive, Passive
Channel 136 A Band, RADAR Sensitive, Passive
Channel 140 A Band, RADAR Sensitive, Passive

Stations List
----------------------------------------
idx MAC Associated Authorized RSSI PHY PSM SGI STBC MUBF NSS BW Tx rate Rx rate Connect Time
C2:5F:5D:A7:11:4E Yes Yes -58dBm ax Yes Yes Yes Yes 2 80M 680.5M 6M 02:56:53
C87:78:4A:49:F3 Yes Yes -59dBm ac Yes Yes No No 1 80M 433.3M 24M 02:56:55
48:B0:2D:65:427 Yes Yes -56dBm ac Yes Yes Yes No 2 80M 585M 24M 02:56:57

 

[ColinTaylor]

If you monitor that page, open another browser window and run a speed test what is the maximum RX Rate that you see?

 

[layanx]

870M

 

[ColinTaylor]

870M

OK that all sounds normal. I'm at a loss as to why you're only getting 300Mbps download then. Have you tried from different wireless clients?

 

[layanx]

Yes i have tried also different devices etc, i am getting crazy from it.

 

[layanx]

Nobody ???

 

[Chazall1]

Exactly what is happening here. running RT-AX86U_3004_388.4_0 My old plan was 300 i had for a couple of years.
My speed test in the speed test in AdaptiveQoS_InternetSpeed.asp. old plan 320mp DL , 38 UL and 250 DL on 5.0 and 2.4 140 DL - 34
I use Pixel 7. 2 weeks ago I upgraded to 1gb. Running the same speed test on my pc 847 dl and 41 UL.
My wifi numbers are have not changed.

 

[layanx]

I think there is something wrong with the firmware.

 

[ColinTaylor]

I think there is something wrong with the firmware.

Install the current stock Asus firmware and do a factory reset. If the problem persists return the router.

 

[Chazall1]

I tried out the stock RT-AX86U_3.0.0.4_388_23285-g5068da5_pureubi.w. Nothing has changed. All numbers the same. I wonder how long fore more speed reduction? lol purchase date 07-2020.

 

[Chazall1]

I was speed testing on my pixel 7p. Foegot that I had a vpn connested. Disabled the VPN and got all ste speed was 900 from a 1 gig plan.
I ordered a replacement ASUS RT-AX86U Pro (AX5700). . I was telling my wife of this issue. What to do??
It arrives today.

 

[L&LD]

Tell her the new router fixed it!