I have TP Link EAP115 connected to a router. But this device stops working as soon as 15 - 20 users connect to the wifi. After this the wifi signal is not visible. When there are 30 - 60 users in a room.

What should I do so that 60 users can connect to Wifi? If you have any other solution then do let me know.

Total WiFi user capacity 80

Room 1 - 30

Room 2 - 30

Room 3 - 20

I have 2 broadband internet connections 50Mbps and 1 broadband internet connection 100Mbps.