I searched on Google, and didn't find any answers, and my issue seems kind of... abnormal.
I know that there have been some issues with wifi with the SP3, but the internet speed is OK. It's about 20-30 Mbps download speed, and about 15 Mbps download speed, but the OS can't use it. The web works well (With both IE and other browsers, such as Chrome), but I can't download any apps from the Microsoft Store (It says that my internet connection is too slow), and when I try to update the WiFi driver, it loads forever when I try to search for them. When I installed Office, it was able to connect, but it was extremely slow (It took about 3 hours). Anyone else experiencing this problem?