Choosing a router for an office for 20 people. Which?

Question

network hardware

Good afternoon.
There is a small office for 20 people.
Internet access (+ wifi + ip-telephony + rdp) is served by the ASUS RT-N16 router (it also has OpenVPN, TomatoUsb firmware)
According to some signs, the router cannot cope with the load (hangs, loses settings, etc.)
What can you do advise on a replacement (I'm looking at ASUS RT-AC68U)?
Thank you.

Answer 1

Well, for example, https://routerboard.com/RB962UiGS-5HacT2HnT