Slow WIFI access can be caused by a variety of reasons, including signal instability, improper router location, device infection virus, network congestion, poor ISP network service, too many devices connected, etc.
To solve this problem, first troubleshoot the problem, such as by testing the connection speed of multiple devices, adjusting the location of the router, upgrading the firmware of the router, removing malware, and so on.
At the same time, the physical obstacles between the device and the router can be minimized to make full use of the transmission efficiency of the signal.
On the premise of ensuring the stability of the network condition, it is also recommended to adjust the number of connections of devices to reduce the impact of network congestion on network speed.