Lots Of Lag

[Tirtul]

Has anyone else noticed that there seems to be a lot more lag as of late. I was running kappa with a buddy of mine and when 2 additional people joined it was horrible. there were marines just standing around that had already been killed. I would walk over resources and mods, even stand on them and it wouldn't pick them up. I am not sure if its something that was recently put in as this lag didn't seem so apparent a week or so ago, (prepatch  7.9) I  have have tried everything to see if it helps but nothing seems to work, anyone else having these issues?

[VScipii26]

I get some odd loading lag here and there, but in-game everything seems to be fine, even in heavy firefights.
 

Is your region set correctly? Was THEIR region set correctly?
Did your antivirus popup in the background without you noticing? It doesn't sound much like a game problem if it stayed constant through the mission.

[Tirtul]

I have looked more into what might have been causing this issue. its seems on the larger defense (mobile/ED) that with myself (north american west) and my friend (north american east) there is no lag at all. As soon as a third or even fourth person joins then the lag is unbearable. we have tried with both of us hosting and it happens in both cases. when a third friend of ours (north american west) joins its laggy but not like the random 3rd or fourth abut with the random fourth and the three of us again with the super lag. I don't know if its just the map size and so much going on or what.but again seems to only be since the last patch set.