There may be many reasons why you're having difficulty casting 10 play content with Chromecast, please review some troubleshooting tips below:

Check your WiFi - please make sure you have a strong WiFi signal when casting. You will need to make sure your Chromecast device and the device you're casting from are connected to the same WiFi network.

Reboot your device -If the video is freezing or skipping, disconnect the device you're casting from and your Chromecast device from the WiFi. Reboot your device by unplugging it and leaving it off for a few seconds before plugging it back in again. Once it has completely re-powered, reconnect the device you were casting from and your Chromecast to WiFi and try again. Sometimes the most simple solutions work best!

Update your 10 play App - If your app keeps crashing, please make sure you are using the latest 10 play version as this could affect your ability to stream programming. 

Check what apps are running in the background - apps running in the background can intefere with Chromecasting. Try closing any background apps and see if that helps.

If you are still experiencing issues, please visit the Chromecast's troubleshooting site here: https://support.google.com/chromecast/?hl=en#topic=3447927  

If you are still unable to resolve your issue, please submit a ticket.