Wi-Fi issue

Firstly sry for my english, I'm not well in that (

Every evening when I play online Wi-Fi is droped me. After that I can't connect to web while I didn't the windows diagnostics for network. My wife haven't that trouble, she have simple Samsung laptop with Atheros network adapter.
The router is ZyXEL Keenetic 4G.
Network card - Broadcom 802.11ac

Can i fix that problem without recover the system? If someone know how it works and understand my note help me, plaese.