If you had a single client and it was connected to the internet by cable, you would probably see close to exactly the same speed as what your broadband bill says you're getting. But when on a shared wireless connection, it's a different case.
Let's take a small detour to something that is rarely mentioned when advertising high speeds: The difference between bandwidth (theory) and throughput (practice).
We need to stick to the theory just a little while longer: There are three main factors that determine how much speed you can get out of a wireless connection:
If the client and access point do not support the same high speed, the speed will never exceed what the slowest party supports. You can read more about this in the article Slow web on mobile or pc.
Now for what happens in practice. As soon as a wireless signal is emitted, it is weakened by:
You can read more about how wireless signals are affected by the environment in these articles:
Usually there are several wireless clients in a home sharing on the same wireless connection. Surveys also show that the number of clients in private households increases every year.
Wireless access points that communicate with each other act partly as clients and also make use of the total capacity available. This applies to mesh networks as well, including communications that pass through multiple mesh access points on the way to and from a client.
A good Wi-Fi mesh network will counteract or try to work its way around all of the biggest issues:
A mesh network will never deliver the theoretical bandwidth even when only one client is connected, but it will seek to deliver the best possible throughput with a stable and reliable performance for everyone on the network.
By providing good coverage and the fewest possible obstacles, you facilitate high and steady speed. You will find a lot of advice on this here in Wi-Fi Central. Better Home Wi-Fi: 18 Free Tips is a good starting point.
If you have a mesh network, make sure that all access points have a good wireless connection with each other. Alternatively, you can also provide several of them with wired internet access. This makes them less sensitive to wireless noise and other signal impairments and also prevents them from using wireless capacity.
In general, you will free up wireless capacity by providing wired internet access to computers, gaming consoles and other devices where possible, either from additional network outlets or by cable directly to the router.
But remember: If you connect computer equipment to the network port of a wireless mesh access point, the equipment will still consume wireless capacity via the access point.