Hello,  i am encountering this issue for a very long time and i have to reboot my router. When this problem occurs. Whenever i am downloading a file from internet download manager or u torrent . My internet gets disconnected though when u log in to router it shows net is connected but it's not working. I have to reboot the router, and my net starts working again other wise if i am browsing every thing is fine but the main problem is downloading. I am using a 4g sim card in my router. And sometimes i have to reboot my router in order to change band . Is there a way of band selection in this router?  I am attaching my router system log as well.