Why does the connection with the router regularly disappear for 15 seconds?

Question

WiFi

Good day! Regularly every 45-50 minutes the connection with the router or the Internet is lost for 15-20 seconds. What could it be? The rustling of the Internet and the use of advice from there did not lead to anything.

Answer 1

You are reconnecting, the reasons are written in the logs of Windows and the router.
Options:
Group key, DHCP, power saving.