When you see the words coming earlier than voices.
This has to work spontaneously, but it doesn’t work in most scenarios. Make sure your Chromecast supported device and the device you are cast to are on the same network, and if possible, test Chromecast using Google Chrome. Enable the following flags after making sure they work with Google Chrome.
edge://flags/#load-media-router-component-extension then change to enabled from default.
So this is how it suppose to look;
Then it should work.