@aarreddy You can install the firmware we provided, then confirm if the issue persists. BTW, are all devices experiencing the same issue, or some specific devices? What are those devices?

@Jarax I think you should be able to downgrade to the previous Archer C80(EU)_V1_210128, you can give it a go. Download and unzip the zip file, then upload it into the router as follows:...

@Perdoni Please refer to this thread to check and confirm the basic settings, then get back with the required information, we will confirm soon: [Troubleshooting] Router Disconnects from Internet

@Zachary1217 Please ensure the QoS settings on the AX6000 are correct as described in the OP. You can also confirm if there is any setting in the local PC or computer as described by Cansol, which is...

@Trey50 Is the model also Archer A6 v2? How about disabling Onemesh on it? You can try to install the firmware we updated here, then disable Onemesh to confirm: [Solution] Disable Onemesh Hidden...

@KresnaNET That's bad. I remember you have opened the case with the support engineers, please kindly contact them directly to see if they have other suggestions or solutions, thanks.