If the Sherpa Classroom isn't performing as you'd expect, it is usually due to poor internet performance on your Network. Here are a few tips to avoid any issues with:
Weak Wifi Signal
If you are using a wireless Wifi Network, move as close to the router as possible.
Try to minimise the number of walls between yourself and the router, especially if they are likely to be solid stone or bricks. These will slightly block wifi signals.
Try to not place your device near large metal structures, beams or furniture as well as a Television as these can badly block Wifi signals.
If you are unable to get any closer to your wi-fi router and the signal is still insufficient, try investing in a wifi booster plugged into a nearby socket.
Slow Wifi Speed
Ensure that nobody else on the same Wifi Network is streaming HD video (like Netflix) or playing games online as this kind of internet usage can take up a lot of your limited internet bandwidth which will cause problems for other users.
The more people using devices under the same network, the more likely you are to have a poor connection to your device.
If at all possible, using a hardwired ethernet connection from your Wifi router to your PC or Laptop device. This will ensure you get the fastest speed available.
If all else fails, turn off your webcam and continue through voice chat.