why am I so lag when I join the...in RVR?

[Chinesehero]

In RvR solo or 6 man I play very smooth
As I join the WB especially the full one 24 ppl, it really lag that I cant do fighting
Is it only my problem or someone else have also this problem?

How to solve it?

[charlysixb]

I have this problem also... everythin' is fine ( new patcher improved my performance ) till i join a WB, then all my FPS goes to hell and no matter how many reload ui i do.
Must be enemy addon.

[SilverWF]

Not lag, but a stuter effect and FPS drops
I have similar problem in the another game - the Division.
And there was a solution that helped me. Here is:
Open Task manager, find a game process (WAR.exe) right click, Set priority, choose Below average (yes, BELOW), press OK.

This helped me too here, stutter effect has been drastically decreased and FPS got a good increase.
There is nothing special, just give it a try.