Hello, I am a business client and in our store, we use this router Speedport Smart 4. We have about 30 in-store devices, mostly connected via LAN which are running fine. The problem comes when the store gets busy and a lot of visitors try to connect to the WiFi. Often times when we have more than 40 or so visitors, the WiFi becomes unstable and new visitors can no longer connect to it. We've tried different DHCP settings, setting a guest network, etc. but nothing seems to help, it really looks like this router cannot support this type of workload.
So my question is simple - is there a device from the Speed ​​product line that can work as an Access point, that we can use to solve this problem?