I had incredible problems with my wireless connection and my 2.4GHz cordless phones.
When the phone rang I’d immediately lose my wireless connection and the only way to restore it would be to reboot both router and computer.
I replaced the phones with a 5.8GHz models and the signal stays solid.
The 2.4GHz phone in my upstairs bedroom, some 25 feet away from the router, would usually drop my connection as well.
Incidentally, my microwave is about 12 feet from the router and the signal is unaffected when I’m using it.
In a building with nearby neighbors, you may continue to suffer signal problems from their 2.4GHz phones. My next door neighbor’s phone, some 35 feet away would occasionally knock my signal down. Fortunately they went wireless, asked me how I solved my problem and have since replaced their cordless phone with a 5.8GHz model.
Jef