Help fix wifi problem

Question

WiFi

Habrozhiteli, I ask for help in solving the problem of covering the office with Wi-Fi. Now we have LinkSys WRT54GL as a guest, and Vigor 2130n as a worker.
There are constant problems with the guest and you have to restart it every 2-3 days. Vigor does not need to be restarted, but the quality of the city sometimes drops to an unacceptable level.
I sin that too many devices are connected to the routers (over 20 on Vigor and the same number on LinkSys)
Is there a way out of this situation?

Answer 1

Too little information on device status.
Are there any logs of a hanging LinkSys?
What is the firmware (stock or DD / Open-WRT)? Doesn't it overheat? Is the food okay?
About network quality - Take inSSIDer and check the air around for free channels.

Answer 2

Are there any logs of a hanging LinkSys? - no
What kind of firmware is there (stock or DD / Open-WRT)? — stock
Does not overheat? — No
Is the food okay? - Yes

Answer 3

20 points is too much. The solution is to put more points and use UniFi, as written here:
habrahabr.ru/company/comptek/blog/114722/

Answer 4

Most likely, the channels used by the router are used by neighboring Wi-Fi access points, turn off auto-channel selection and select another channel manually, determine which channel is more stable by typing.
It is also possible that the router is overheating.

Answer 5

Problems most likely 2, reduced to one.
1. The processor of a poor router simply cannot cope with such a volume of data, it chokes. Or there is not enough RAM. Here, as they say, no comments - so everything is clear.
2. WiFI does not have MIMO - Multiple In Multiple Out. This greatly affects if you have a lot of devices connected to one access point. Read about it in this article here: habrahabr.ru/post/132247/
As you can see, it all comes down to the fact that you have too many devices on one router. So people are right to advise - you have to increase their number.