We've found an issue with taking over a bot or even picking up his weapon that will cause hit detection issues. However we still cannot replicate any further hit detection issues that are not latency based (as the problem).
We are looking into what is causing our latency spikes as we had servers stable running 64 players before. It is part of our performance passes on the game (as is the majority of this patch).
Code and QA are working almost non stop to isolate different performance issues across various hardware and minimize if not remove any harmful effects to gameplay from them (such as fps loss and stuttering). I think I've mentioned it before, but I also maintain a top bugs list internally that consists of a "Top 10" bugs as well as a further 15 or 20 that will likely take their place when one of the "Top 10" gets addressed. Along the way as different system are looked at other bugs get fixed as well as the team moves through the list (often times bugs or code that is causing them can lead to multiple issues, or another bug needs to be fixed first to try and find a root cause of something else).
The following is probably a preview of my "what we are working on" post for next week.
One of the main things we are looking into at the start of this upcoming week is the router issue where players either 1) Can't get any servers, 2) Can get them, but they get an incomplete list and it stops and never updates again, 3) Their internet connection gets disrupted by trying to obtain the server list.
We also believe we've identified several more causes of hitching and FPS drop and are looking into them. So work will continue in this area until we've got them cleared up. I'll hopefully have something more to add to this as Monday/Tuesday roles around.
Have a good weekend everyone.