Internet keeps dropping but wifi stays connected until I try to select network again

Question

I am using ubuntu 18.04 on a Lenovo IdeaPad 330 Every so often (once in 10 minutes), I lose internet connectivity. Wifi still stays connected as indicated by the status on notification bar.New pages don't open and existing requests are delayed.

When I go to the Status area and click on wifi> select network, it magically returns. I donot have to reconnect, or change network.

Just going to top right corner->Wifi SSID Name-> Select Network and cancel reconnects the Internet.

I am using ubuntu 18.04

 Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31)

I have already tried disabling Power management on Wifi WiFi randomly disconnected on Ubuntu 18.04 LTS