fps drop in vortex solution

[War]

i've tryed addons, changing my entire pc settings, and this topic : https://www.bnsbuddy.com/index.php?threads/constant-stutters-try-this.126/

my fps is still not more than 25fps during the fight with julia(last boss in temple of eluvium) and if i turn on stream it drop to 15fps
is there any possible way to fix that fps drop ?

edit: i play on lowest settings possible ingame and hiding people during the fight.

 

[Volmie]

https://www.bnsbuddy.com/index.php?threads/world-lights-and-vt-optimization.173/#post-658