Board Game Arena

and game lists after it. If you only updated the overall slot positions every 10 seconds, it would be more stable.
Leave some spots open for a little while when one leaves and have a bunch at the end vacant that can be used until you run out. Don't adjust the length of the list for each single change.

This impacts the ability to suggest games and change tables. Often, between putting mouse on a person/table and clicking, the target person/table has changed.

Making the player list a fixed size and scrollable would work.

Agree.