Yes......all that happened after patch 1.9
Before patch 1.9 when ever there was lag in a map it meant that the players
where freezing while you could move around the map.(for others you are freezing too of course)
Now...after patch 1.9 whenever there is lag there is a major fps drop....
Something is really wrong with latest patch...
Either CRYTEK has to fix that with a next patch...or it has to be fixed by GPU driver updates.