The Wi-Fi adapter in my Lenovo Ideapad does not wok properly. My laptop keeps disconnecting from Wi-Fi randomly. The Wi-Fi adapter is Realtek 8822BE Wireless LAN 802.11ac PCI-E NIC. Device manager says it's working properly, even though it's obviously not. Device manager also says it's up to date. This is not a Wi-Fi router issue since non of my other devices have this issue. Any help?