Wi-Fi too slow? With MU-MIMO, 4 antennas, mesh and suitable hardware as a solution

Less is more? At least with Wi-Fi, none of this applies and anyone who, like me, has his rooms in an old, listed house, can never have enough. Also in the case of technology. Of course, it is precisely with this that an enormous amount of money can be sunk, and it is therefore all the more important to be targeted. That's why I want to give you a small, greatly simplified introduction to what you really need in terms of prerequisites, so that it doesn't sizzle and drip later in the home net.