If you experience issues with online video playback on your Mi Smart Projector, such as videos not playing smoothly or buffering for extended periods, please refer to the following methods to troubleshoot the issue:
1. Make sure the projector is connected to a high-speed and stable Wi-Fi network. Alternatively use an Ethernet cable for a wired connection if possible, as it tends to be more stable. Physical obstructions such as walls can also affect the Wi-Fi signal strength. Consider relocating the router or using Wi-Fi range extenders if needed;
2. Restart the projector and router by turning them off and unplugging them for a minute. Then, plug them back in and turn them on;
3. Experiment with streaming content from various platforms and modifying the video quality. The suggested bit rates for the video streams are as follows: 10Mbps for the 4K UHD video stream, 5Mbps for the 2K video stream, and 2.5Mbps for the 720p video stream;
4. If the app is up to date and clearing the app’s cache and data doesn’t work, may uninstall the app and reinstall it from the Play Store;
5. Make sure the smart projector operating system is up-to-date. Please navigate to [Settings] >> [Device Preferences] >> [About] >> [System update] >> search for an available update and then select the download and install option to update the system;
6. Performing a factory reset on the projector. Navigate to [Settings] >> [Device Preferences] >> [Reset]. Be aware that this will erase all the settings and data, so make sure to back up any important data before proceeding;
7. If the issue still persists, you could submit feedback on the projector by going to [Settings] >> [Device Preferences] >> [Home screen] >> [Send feedback].