If your Wifi works well, try a speed test. my *PHONE* gets 3x the wifi speed as this tablet. Even after I updated the BIOS.. Both devices report connecting to the router at 150Mbps.
On average on the HiBook, I get ~40Mbps local network downloads .... my phone gets ~150Mbps on the same file, same router, same distance. Meanwhile on the Internet (230Mbps connection) it's the same exact story.
Also, WiFi just *disappears* sometimes... like you physically unplugged it.. no trace of it in Device Manager when this happens. This tablet is more than odd.
And get used to the wonky power stuff... it's a problem with the firmware that they might never fix. Remember these are low cost tablets, and that means DUMP N RUN.