When searching online, you will find many ways to improve wireless performance. One suggestion that I think you may not see often is to use more wires. ‘Using more wires will improve wireless performance? I thought the point of wireless was to use less wires?!' While that may be true, it is important to understand the physics of wireless networking. There is only so much bandwidth available among the range of frequencies used by wireless transmissions.
Consumer Routers Most everyone should be familiar with the standard consumer-grade wireless router. Many Internet Service Providers lease modems that have a built-in wireless router, which most consumers are likely to use because it is convenient. Other users choose to purchase their own wireless routers to have a better quality wireless router and/or to have more control over their home network. Ideally the router should be placed in a central location in the home.
When I initially created VLANs on my UniFi wireless access points, I was still new to VLANs in general, and I was not quite sure how to configure my network switch. I was wanting to join my wired and wireless devices together on several different VLANs for various purposes (IoT network, guest network, security camera network, etc.). Setting up VLANs on a TP-Link switch is not too difficult once you understand how VLANs work.
It is not uncommon for many home networks to utilize an all-in-one network device provided by the users' Internet Service Provider (ISP). For ease of setup and use, ISPs typically include/lease this equipment by default when users order Internet service. These all-in-one devices are essentially a combination of a modem, router, switch, firewall, and wireless access point. They can also include VOIP (Voice Over IP), home security, and cable TV services.
Those who use or own Ubiquiti UniFi products mostly are familiar with the UniFi Controller. It is software used to manage all of your UniFi gear in a single, beautiful web-based dashboard. Ubiquiti sells their UniFi Cloud Key (affiliate link) if you wish to have a dedicated device, but you can also install it on your own hardware such as a Raspberry Pi (affiliate link). You can save a little bit of money by using a Raspberry Pi (around $50-60 versus $90-100 depending on the accessories purchased for the RPi), and you also have the flexibility to run additional software on the same device.