I never had any problems having it track my Globals / HOF's for the very few I ever got on Cyrene.
For the rapid succession I do not think that is a problem for it, remember it looks at the text log, I have seen it all of the sudden bam bam 4 or 5 hofs come up in the tracker, and then sat back the next 30 seconds watching them finally display in the EU window. I wondered about that as well and it appears it can handle that pretty well.
Lag now, I do not know if that harms it any, but again, given it's looking in text log, that may not be an issue.
Another thing to take into consideration is that just because the entire population of 9 people who still play on cyrene, have trackers, does not mean they have them on, they are logged in, they are on planet etc etc at the time. Given they want people ON planet to grab it, even if someone HOF's, even if it shows universe wide, if there are not enough folks on CY to hit the 3 or 5 (which is it, ill have to go back and read). It may not count it just because of that, I don't know and unfortunately it's not like we can snap our fingers and generate a hot to check it out
sluggo