So i often have issues with the Connection dropping without disconnecting and then i always have to reconnect before it starts working again and im open to fixes, the Chipset is the mt7925 on the card.
It is not unusual for WiFi to break with newer kernels and fixes are slow to come. Often fixes are back-ported from even newer kernels. I find it important to have a USB WiFi dongle to use while waiting for fixes to appear.