@Marvin_S 

Hello, thanks for replying. I usually have about 5–6 devices connected to the 5GHz network on average, occasionally going up to 10. By “separately,” I meant that the 2.4GHz and 5GHz networks have different SSIDs.

Not all devices experience disconnection issues. For example, my laptop, which supports Wi-Fi 6E, works fine with the network. However, the majority of smartphones can’t stay connected. Even my guests have asked about this issue when using both phones and laptops.

I’ve tried fiddling with the channels and channel widths (setting them to different channels and even on auto to see if it fixes the issue), but the only solution I’ve found so far is to reboot the router when it happens. Unfortunately, even that is just a temporary fix. I suppose my only option now is to contact local technical support…

  @Marvin_S 

I've tried changing DNS, I've also tried that guide... it doesn't fix the disconnection issue. Whenever the devices disconnect, they refuse to reconnect automatically. I can connect to it manually, but not automatically. I don't think this is on my end :(