Wi-Fi connection is disconnected regularly.

[PeDaLu]

・ Use in AP mode

・ Firmware: V 1.0.9.64_10.2.64

・ As a phenomenon, all terminals can not be connected at 5 GHz and 2.4 GHz irregularly.

・ Turn off the router and restart it.

・ Used channels are confirmed by Wi-Fi Analyzer and use uncongested channels.

[plemans]

You have a7000 in your name. I take it you mean R7000 as the a7000 is a usb adapter. Plus the firmware listed is for the R7000. 

The R7000 .64 firmware has been known to be a bit flaky. For some it works great but for the rest, most are downgrading firmware to an earlier version for better results. I'd recommened the .42 firmware. Here's an older thread that discusses the downgrade. 

https://community.netgear.com/t5/Nighthawk-WiFi-Routers/How-to-Downgrade-Firmware-on-Nighthawk-R7000...

[plemans]

make sure you do the downgrade over a hardwired connect and reset the device afterward. Best to restore it manually as well.  

[PeDaLu]

Thank you! As I was able to downgrade, I will see for a while.