If you're trying to remote control a computer with limited Internet access you may change the P9 Connect viewer so it runs in low bandwidth mode. You can simply limit the number of colors used and lower image quality. Furthermore if the device has multiple monitors then choose to see only one of them.
Configuring the P9 Connect viewer quality settings on Microsoft Windows.
Configure the P9 Connect viewer quality settings on Mac OS X.
Note that setting Zoom level to 100% will also make your viewer more responsive. It then doesn't have to use resources resizing the received video stream.