To keep Litmatch from freezing up during voice chats or calls, make sure your device is connected to a stable network. Try using both Wi-Fi and cell data to see which one works better.
When real-time audio functions are active, your device may not work as well if it gets too hot.
Get the latest version of the app from the App Store or Play Store to fix bugs.
Remove any app cache or restart the app if the issues don't go away. Also, make sure you're not using a VPN or proxy that could slow down the connection.
Lastly, check your device's settings to make sure Litmatch has access to use your microphone and speakers. To free up system resources, close any other apps that are using a lot of data or CPU in the background.
If none of those things work, check out Xolvie to read about problems other people have had and share your own.