I HAD THIS SAME ISSUE - The problem is with the Google Play Store app that was updated sometime in February. Your tablet will freeze at times, and apps will not work/open correctly, and go to a black screen when you try to open them (Netflix etc) TO FIX THIS SIMPLY: Try resetting the tablet to factory setting, and do not log/sign into the Google Play Store when you are first setting it up. If you log into it, it will update, & mess your tablet up again, & you will have to start over - DO NOT DOWNLOAD ANY APPS FROM THE UPDATED PLAY STORE AT THIS TIME - Any apps that you want or need, can be downloaded from the internet or from an alternative app store that you can also download. Just search the internet for any specific app or Android APK by typing the name in Like "Netflix APK downdoad" or "Avast Mobile Security APK", games etc. You can down load pretty much anything that you can get from Google Play Store if you find an alternative store (Just Google it to find one LOL) – You can also download Apps/APKs to your computer, and just install them to your tablet using a USB cable (You may need to download an “APK Installer” app to do this) - HOPE THIS HELPS - THIS SHOULD FIX YOUR PROBLEM
Kevin