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.
I'm finishing D:OS2 first with another party. Also Larian games are always better a couple months or so after release, so I don't mind waiting. So no not the only one :)