Multiple factors may contribute to connectivity issues:

1. Game server maintenance. Join our official Discord server for announcements.
2. Network problems:
a) Make sure your PC is connected to the Internet, and your Internet service provider has no current maintenance or connectivity problems (contact the provider's support). 
b) Read an article by Microsoft about fixing Internet connection issues on Windows 10.
c) For Wi-Fi issues, read an article by Microsoft about fixing Wi-Fi connection issues on Windows 10.
3. Multiple downloads running side by side. Try pausing your current downloads (browser, other games, torrents, and so on).

Your Internet connection speed is not the only factor defining the overall connection quality; stability and latency are also important. You can check your connection capabilities here: https://www.speedtest.net (choose a region nearest to your preferred game server location).