What problem does Preload Number of Thrulines Matches solve?
The Card view of your ThruLines list of all ancestors shows no DNA match numbers at all, so there is no way to tell which ancestors have matches descending from them without opening each one in turn. To find the ancestors with the most matches, or to spot the lines with none, means working through the whole grid one card at a time. Preload Number of Thrulines Matches loads that...