Here are some suggestions for troubleshooting the delay in switching between apps on your Smart TV:

1. Check your internet connection: Make sure you have a stable internet connection with proper speed.
2. Close unused apps: Close all unused applications to conserve your TV’s memory and processor power.
3. Update all apps: Make sure all of the apps on your Smart TV are up to date.
4. Perform a factory reset: This may solve the problem by restoring your TV’s settings to the default.