FPS drop then granade explode MERCENARY

Today i switched to granades at my Mercenary. During a gas grenade explosion by fire, FPS drops by 15-20 frames, which is quite unpleasant.
I found a thread at reddit with the same problem (https://www.reddit.com/r/PathOfExile2/comments/1ha5hat/terrible_optimization_and_massive_fps_drops_as_a/)

Is it will be fixed?

My PC:
i7 7700
RTX 4060 ti
16 gb RAM
m2 ssd

Im playing at upscale mode : NIS (default) with no upscale at resulution 2048x1152 (i have a weird monitor :) ). So, i have around 80-90 FPS at high texture quality and other settings ar low. I
f there an explosion or a series of explosions happends on the screen, the fps drops from 80 to 40 and then go back. So, i have drop frame rate by 50% at the fight.

This is a noticeable issue on my Merc. I'm running 120 frames through the game in all zones till I explode grenades. During the animation there is are a lot of particles and extra effects during an explosion such as rocks. It becomes more of an issue as you increase the number of grenades being shot, currently 5. My 120 frames sinks to 35 fps on average.

I've done some testing with all the settings and there isn't one setting that resolves this issue. All settings lead to the same 35 fps on explosion. The one that I did see keep frames above 80 was Dynamic Culling. This removed all the particles and extra special affects leaving only the bright ground effect. This still left me around 60fps when shooting multiple times.

Thanks for all that you do on making an excellent game. I hope your able to resolve the issue.