How many devices can connect to a router without slowing down?

We have a lot of devices in our house, phones, TVs, smart speakers. At what point does it start slowing down the Wi-Fi?

Most home routers support 20-30 devices, but performance drops if many are streaming or downloading at once. Consider upgrading to a Wi-Fi 6 router for better handling of multiple devices.

To manage congestion, you can assign priority to specific devices using QoS settings in your router.