Slow buggy not ready for commercial use

Access - basic access - to shared files is intermittent. I use this feature across all platforms, all OSes, multiple locations, multiple ISPs. Some days it works like any cloud share app. Some days it doesn't work at all. Even when it is working it is slow regardless of state, country, ISP, connection type. I literally log into my two primary accounts (personal and work) from every compatible browser, on Mac and Windows, wirelessly or wired. Performance is the same: alpha release type slow.