Considering that it takes two players to fire a game, that an average best of one game takes about 7 minutes and that some percentage of players play best of three over best of one, this would put concurrent players at somewhere in the area of 45k to 50k on average.https://twitter.com/SaffronOlive/status/1136079371733753856 …
for perspective, those are numbers close to mobile games status which overall see way more activity at a time than most pc games