Gaming on the AX86U is experiencing lag/stuttering.

[littlepopkaka]

My RT-AX86U is running the latest firmware,388.11. Previously, with my 200Mbps down / 30Mbps up broadband, enabling Adaptive QoS (AQoS) kept everything stable, including gaming. After upgrading to 500Mbps down / 40Mbps up, whenever someone downloads something (whether from Steam or a mobile app), the game experiences severe packet loss. I have to manually limit the bandwidth back to 200Mbps to make it run smoothly.
Doesn't Adaptive QoS (AQoS) still support hardware acceleration? Is it a bug, or is there some other issue? Could it be that the performance of the AX86U is inadequate?

 

[Tech9]

Your router is capable enough for almost anything on 500Mbps ISP line. Adaptive QoS is Asuswrt feature, nothing to do with Asuswrt-Merlin. It's whatever came with the GPL from ASUS. You latency is really high. If your gaming PC/Console is not Ethernet connected - your testing is not valid. It can be environment change affecting Wi-Fi. Test wired only, no QoS and all Trend Micro components disabled. Withdraw the data sharing agreement, reboot. This is the perhaps the best configuration for gaming. Good luck!

 

[Tech9]

Previously, with my 200Mbps down / 30Mbps up

After upgrading to 500Mbps down / 40Mbps up

Check the modem stats as well. Sometimes after plan upgrade the errors and corrections rate increase. Depends on the connection quality - cable length and condition. You perhaps have DOCSIS 3.1 modem.

 

[littlepopkaka]

Check the modem stats as well. Sometimes after plan upgrade the errors and corrections rate increase. Depends on the connection quality - cable length and condition. You perhaps have DOCSIS 3.1 modem.

Using Ethernet network. I tried modem directly with the computer, and with Steam downloading at full speed in the background, the performance was still better than connecting through the router.

 

[Tech9]

Your router is running 3rd party firmware with unknown configuration.

In case of performance degradation the usual advice is to reset it and start over.