How to choose a router for a small office?

Question

WiFi

Good day.
This question has been raised many times. But each has its own specifics. Please advise for my specific situation.
There is a small office.
6-7 clients on a twisted pair
cable 5-6 laptops via Wi-Fi
now has TP-Link TL-WR841N/ND (ethernet ports are expanded by a hub)
periodically there are "freezes" of communication - both local and with the Internet. BUT the main complaints come from wifi clients.
I believe that the router simply can not cope with the load.
How to correctly select a new device so that it is exactly enough for an average office load with a possible increase in wifi clients up to 10?
upd:
* office work of clients is "typical": work with a local file server (mainly office documents) + Internet: mail, surfing, social networks (both personal and business purposes)
* office - 4 rooms "star": central and 3 in different directions, each with an area of ​​\u200b\u200b~15 sq.m.
The router is in the central room. The doors to the central room are always open.
Office in the basement of a residential building in an area with low-rise buildings.

Answer 1

For small offices, you can use Mikrotik products. Suitable for 7 wired clients https://routerboard.com/RB2011UiAS-2HnD-IN
However, it seems to me that there are too many clients for one point. Perhaps it is worth resolving the issue by installing a router and additional AP(s) with a limit on the maximum number of clients. From SOHO, again, everything on Mikrotik will be more comfortable to build. Capsman provides the illusion of seamless WiFi
Either, it's not SOHO's products to decide everything ...
PS and throw out the hubs already! What year do you think we are?

Answer 2

As mentioned above, I would recommend Mikrotik.
But as a more budget option, I would first try to reflash the router with another firmware.
DDWRT - a simpler
OPENWRT - is a little more confusing, but you can do more with it.
From personal experience, the OPENWRT TL-WR1043ND lives and pleases, but there are nuances with laptops from Lenovo. For a long time I selected drivers on which Wi-Fi did not fall off.