Yes,
it's totally unusable ..... I'm on 100mbit network and it is ALWAYS communicating with server in redmond .... I don't know whether they have only one datacenter, but it is unbearable. I'm in czech republic and instead of connecting to ANY other datacenter, it is connected to the furthermost in USA .... I can download from richmond university FTP server about 50-80mbps ...... but from microsoft 2-8mbps from the same location. I'm not sure how they want to provide such service for billions of users:o) And it seems ongoing problem for years!!!! People around the world reporting slow upload and download and they are also connecting to redmond ..... it's insane!!! I'm using web interface and trying to manage photos and videos from my phone, I don't even dare to sync something on my computer through dedicated application ..... interestingly, google drive for example, it is running 100mbps constantly .... just to find the way, how to swap onedrive to something (anything!!!) else and use conveniently things like phone sync, onenote etc ..... but it is obviously not possible and hardlinked with onedrive ..... and it's even the most expensive cloud storage, which is so funny it makes me cry ........