Wi-Fi adapter and router at 100 Mbps?

Question

WiFi

The provider honestly gives a download speed of 100 Mbps. The apartment has a Wi-Fi router TL-WR840N. If you pull a cable from it to a PC, you will get 20 meters + you will have to hide the cable in some places to make it more or less aesthetically pleasing.
For this reason, I thought about buying an adapter (USB or PCI - it doesn't matter). The router is in the line of sight at a distance of 10 meters to the PC. In the past, I had a bad experience with Wi-Fi through a laptop. The adapter on it supported IEEE 802.11n, but the download speed ceiling was 40 Mbps with a minimum of barriers between devices. As soon as you connect the cable directly, the speed becomes 100 Mbps.
Yesterday I also tried another laptop, which also supports IEEE 802.11n and did not increase the speed over 20 Mbps. Cable is ok. When I turned off the mixed mode in the settings and switched to only n, he did not want to connect to the network at all.
From all this, for me, the Wi-Fi adapter seems to be a very risky venture. Can you advise something?

Answer 1

Even if there are no interference and obstacles, the practical maximum for n in one direction, if I don’t confuse anything, is 75 megabits (at least in reality I haven’t seen speeds anymore). You, I assure you, have obstacles and interference, even in line of sight (pickup, power cables, not ideal location of antennas, adjacent channels, microwave fonit and tydy).
If you want more speed, then the ac range will save, and the router and card must support it.

Answer 2

If there are not so many Wi-Fi networks on the air, then by choosing the optimal channel (frequency) you can achieve the desired 100 Mbps. in theory, but it's as lucky.
Scan the air with Issider , for example, watch a clean channel, set it in the settings. But there are still no guarantees, and in conditions of congestion of the air, traffic can still sag.
But in our time, 2.4 GHz is so noisy that I have not seen more than 20 Mbps on my wifi c dir 615.
So, there is nothing better than a cable ...

Answer 3

you can try 5ghz

Answer 4

Internet speed or download speed of 100mbs? than in stock and no matter how trite it may sound, make a directional signal towards the computer, about 5 GHz it will soon become more than 2.4, and then they write that everything is not so clean, to be honest, it’s not entirely clear why 100 mbs are needed, unless you are not a server + a real cinema