Larian’s Swen Vincke posted a tweet yesterday showing the game hitting 500,000 concurrent players, making it the third most played game on all of Steam He said that he told IT to only expect 100,000 concurrents at max.
Not sure of others having been having issues with steam save file cloud sync but it seems like every other time i try to start the game it hangs on syncing errors. Wonder if it's just me or maybe a bunch of people due to the larger than expected concurrent player number.
I believe it shouldn't matter how many concurrent users are playing a specific game. Steam's cloud save service is handling dozens of millions of users at any given time.