You can use an app to check how busy your Wi-Fi channels are and potentially switch to a different channel, though most routers should handle this automatically.
Congestion, where Wi-Fi signals interfere with each other, can be an issue, particularly for people living in apartments. You can use an app to check how busy your Wi-Fi channels are and potentially switch to a different channel, though most routers should handle this automatically. Another consideration is router limitations. Most modern routers support up to 250 devices in theory, but performance can suffer long before you reach the limit.