Takes forever to open a medium size Word document when I have 4-5 other ones open (rebooting doesn't help). Had to buy an external antenna/booster to improve internet connection speed and the device wasn't too far from a repeater (speed went from around 1 Mbps to around 10 Mbps - a laptop that I have in the same room gets 10 Mbps without other help). No other issues so far.