It happens every other game or so of execution on EU, at the very end of the game, when the game is over.
Happens at crucial moments in stopwatch/objective.
I also seem to have another issue with warping players again, but the ping is good for all players including myself, so might be my side just thought id add that in, just in case anyone else is suffering similar problems.
http://forums.dirtybomb.nexon.net/discussion/21433/connection-to-server-lost#latest
Been doing that for a while but no one has given any update or any insight what so ever. I don’t bother any more. It happens every day, rarely in stop watch or objective, but maybe quite literally 1 in every 5 execution games it will happen. I’ve pretty much stopped playing execution because of it.
I lost hours off my 18 hour booster because of this bug. It drove me insane. Such a waste of money. You don’t get your credits or your XP but the time still gets taken off the booster.
We are looking into this, as always if you have any information on your server and time we would appreciate it.
Thanks guys. 
Just happened twice tonight:
About 2150 AEDT
bloodsquadclan.com/images/2016_01_14_21_45_40-rep.mp4
About 2000 AEDT
bloodsquadclan.com/images/2016_01_14_20_40_46-rep.mp4
So did tab to show server details as well!
We’re aware of the server issues. We’re looking into different ways to improve them for you