On the new dragon Meiru, so many people were trying to kill it on my server Bismark for over 30 minutes my window slowed to a crawl on my fairly modern PC, assuming it's a single core/FFXI limitation.
But the short of it is, after a while, my window crashed and I don't know if I even got credit.
Edit: I got credit for the kill.
This leads me to my next suggesiton. Under 'currencies' add daily domain invasion points so players can track if they have capped their daily points yet, as well as see their total points without going to norg.