Okay, so timing. For the next tournament I have set the overall time to 7 days but I have implemented the time zone rule to see if that makes a difference. I am going to keep a note here for other organisers about how often the games ran out of time...
In the January 2021 tournament I ran I used the basic international rules and set the timing to 7 days for a 3-4 player tournament, which is 21 hours on each players clock. There were approximately 84 games, 13 of which timed out (you can spot these in the log because they 3-2-1-0 scores), 23 were skipped by one of the players (have a 1-1-1-0 scoring). Obviously way too high.
The
https://boardgamearena.com/tournament?id=74805 tournament which finished in Apr 21 had 184 games, 50 finished with time outs, and 43 with skipping, so the use of the playing hours option definitely helped reduce skipping. I will be pushing the time out (21h per player) for the next one.