When load-shedding occurs, thousands of Fibre clients lose your connection
Another solution might be a small UPS device. A 1000VA can easily power your CPE device and your WiFi router for the standard 4-hour load-shedding period. You should also be able to charge your mobile device to stay connected
This will allow you to stay connected during load-shedding, as well as avoiding the rush to re-connect when the power comes back on.