Connected without internet access. How to decide?

Question

Computer networks

What am I complaining about. Wifi clients sometimes get into a stupor.
The Giga II router worked for me for many years. Pretty decent machine. Recently changed to MicroTik. So it's not
the router.
Two laptops. One has been serving me for 7 years. Sinned on the wifi module. Replaced . the second fly did not sit. The second day I just settle in. Wide collection of android smartphones.

Either the exchange will freeze for a few minutes, or the clinch is such that a reboot can only be treated.
At the same time, everything works on the cable at this moment.

It is consequences of locks of the cart? Or some kind of magic in the name of the network? Can the name of the grid with numbers be the reason?

I will clarify. Gags on laptops can go away on their own in a couple of minutes (periodicity is 2-3 hours).
Smartphones wedge less often. Once every few days.

Answer 1

During the wedge, you need to do a couple of commands on the PC
tracert -d 1.1.1.1
nslookup google.com