That would be the expected behaviour, but we have an exception: a small 3-players group, two games for each player, which is messing with the overall picture.
You can spot them in the “games performance” chart, where they float at a “2” level.
These three players had the following performance indexes:

+2

0

-2

Which means that a player won two games, a player lost two games and a player had a win and a loss.

Neither of those scores can be achieved by a regular 9-games player (the possible arrangements of wins and losses with 9 games are all odd numbers), so in the final chart there will still be three pleats showing one player each.

One game left. I think it’s likely both players intend to play out to the end at this point. I hope it’s also safe to assume both players will play normal endgame and not eg try pointless deep invasions this late in the game. At a quick sketched variation there might be slightly under 30 moves left. I’m sure I wasn’t accurate, but it should be something like that (game ongoing so really shouldn’t be more specific). If recent trends in move speed hold it’ll average less than a week per move even with the weekend pauses, which puts the end of the game sometime early next year, maybe mid January.

Approximately one move per 10 days.
Going on in this tempo and assuming that it ends at move 200, this could very well take one year to finish the game.
Of course if there isn’t a resignation of one of the players.

So glad that I didn’t participate in this tournament.

As a matter of fact, this tournament is the first and only one I ever participated, and probably will ever participate in. So, sorry for the dumb question, but when this last game is over, how long will it take before the start of the second round?

The second round should start straight after the game finishes. Because of the size of the tournament, there’s a chance there will be some delay (minutes to hours, at a guess) as the system works through everything to set up the new round with so many players

Except one player is already playing as slow as possible (whether intentionally or otherwise) and the other explicitly said in here they’d try to play fast and is typically moving in ~1 day recently

Thanks for the updates to the graph, which I have found an interesting distraction. Unless we get a whole bunch of resignations, seems like the only two parts are likely to have much visual change are the center performance graphs until next round.