If you want to connect your computer to the Internet or your home network with a cable, you have two options. You can either buy an already finished cable with connectors in the required length in the store, or you can make it yourself. The home production of the network cable is necessary especially if you need to pass it through a narrow hole into which the connector doesn't fit. You usually have to install it after passing the cable through a small hole. Read how to make such a cable and how to repair that current one.
The use of switches (network switches) is currently the prerogative of company networks in particular, but they are also used in home networks. In the market you will find switches in various price categories, which differ in parameters and additional functions. What to focus on and how to choose a new switch? This is the issue to what we will apply in the following lines.
When you have a fast connection, but there are significant speed fluctuations, something is probably wrong. It is a question, where to start looking. Basically, you should first verify if the connection really offers the speed which you have agreed with the provider in the contract. The problems can also be caused by a large number of running applications, it is necessary to check it and possibly leave only those one that you are currently using. Then check the aggregation and after that the router.