Quick: Does the amount of groups affect event optimization?

Just throwing a quick question; Does the amount of groups withing groups have any effects on event optimization or performance? I just noticed that groups count as an event, and I put all of my weapon events into their own groups, inside a master weapon group.

Probably not, but as with any performance question, you can check yourself by making performance measurements both ways and seeing if there's a measurable difference. If not, then it doesn't matter.