If you’re a Google+ user with a slow internet connection, you may miss the hangout with your friends or relatives which Google doesn’t want and their goal is to bring people face to face even on slower connections, hence they’ve enabled low bandwidth setting for the hangouts.
Google Instant automatically detects and turns off if you’re on slower connection, similarly Gmail offers a basic HTML view for low bandwidth connection. Then why Google+ hangouts can’t automatically adjust settings of bandwidth which something Google+ team to look into.
Enabling Hangouts on slower connections
If you’re on café or hotel or during travel stuck on an internet connection with low bandwidth,
Click ‘Settings’ button for hangouts and switch to slow connection mode, which turns off live video for thumbnails and your main video resolution and frame rate will be reduced, but you can keep the conversation going.