RT-AX88U Slow WAN speed

[kenc1103]

I have Xfinity 1Gb internet. Speed test from Asus app shows less than 500Mbps down with AiProtection and QoS disabled. HW acceleration is enabled. WAN Aggregation is enabled. I have seen people here with RT-AX68 or RT-AX88U got speedtest result close to 1Gb from their Asus app. Do I have a hardware issue? How do I check the hardware version on my RT-AX88U?

 

[EmeraldDeer]

I would be surprised if there was something wrong. Not many sites can push more than 500 Mbps and the ones that can only do so at like 5 AM. It is CPU intensive to be the receiver of this much bandwidth, less so to pass through. I have a Comcast 800 Mbps plan but have never seen anywhere near that kind of download throughput. There is no practical consequence to that, though. I have FlexQoS enabled and max out between 350 to 450 Mbps from dslreports/speedtest, but I cannot tell if the the router CPU is the limitation or the speedtest site. I am happy with FlexQoS because I get A ratings for bufferbloat. Using a laptop with a fast CPU as an iPerf server, I get 600/400 over Wifi from my Apple devices, so WiFi is not a limitation. Just now I ran an Xfinity speedtest from the Ethernet connected laptop and got 586.6 Mbps/12.8 Mbps. I have never got much more than 350 Mbps from the router's speedtest. I don't see how AiProtection could impact bandwidth. By the way, FlexQoS needs AiProtection for it's categorization database.

 

[Mikeyboyeee]

I would be surprised if there was something wrong. Not many sites can push more than 500 Mbps and the ones that can only do so at like 5 AM. It is CPU intensive to be the receiver of this much bandwidth, less so to pass through. I have a Comcast 800 Mbps plan but have never seen anywhere near that kind of download throughput. There is no practical consequence to that, though. I have FlexQoS enabled and max out between 350 to 450 Mbps from dslreports/speedtest, but I cannot tell if the the router CPU is the limitation or the speedtest site. I am happy with FlexQoS because I get A ratings for bufferbloat. Using a laptop with a fast CPU as an iPerf server, I get 600/400 over Wifi from my Apple devices, so WiFi is not a limitation. Just now I ran an Xfinity speedtest from the Ethernet connected laptop and got 586.6 Mbps/12.8 Mbps. I have never got much more than 350 Mbps from the router's speedtest. I don't see how AiProtection could impact bandwidth. By the way, FlexQoS needs AiProtection for it's categorization database.

It doesn't aeffect bandwidth. It affects the number of cpu cores used when AiProtection.

I get over 950/40 on my Xfinity 1GB Connect with a wired laptop. 430ish on router when AiP enabled

 

[kenc1103]

It doesn't aeffect bandwidth. It affects the number of cpu cores used when AiProtection.

I get over 950/40 on my Xfinity 1GB Connect with a wired laptop. 430ish on router when AiP enabled

I got 940/40 when hard wired with AiProtection enabled. What speed do you get on WiFi?

 

[Mikeyboyeee]

Fastest I have seen on my s10+ is 775/41.

 

[kenc1103]

Ty

Fastest I have seen on my s10+ is 775/41.

Did you enable 160 MHz channel bandwidth?

 

[Mikeyboyeee]

Ty

Did you enable 160 MHz channel bandwidth?

YES.

 

[kenc1103]

YES.

Do you have AX clients only or mixed?

 

[Mikeyboyeee]

Mixed. Maybe 1 or 2 AX clients. The rest are older 5ghz and many 2.4ghz IOT types devices.

 

[kenc1103]

Mixed. Maybe 1 or 2 AX clients. The rest are older 5ghz and many 2.4ghz IOT types devices.

Your Samsung S10+ supports 4x4 MIMO, my iPhone 11 only supports 2x2 MIMO, maybe that's why I don't see WiFi download speed go beyond 600Mbps.