Interesting, after downloading the above mod and test it out.
The performance still bad (100% CPU all the time) but no more micro stutter when fighting Vaal Hazak. The interesting bits are the fps drop every time your weapon hit the monster (in my case it dropped from 60 to 55-58, or 56), I think because the game has to calculate what the monster will do so you will have like a 2-5 fps drop.
FPS will dip and raise like mad whenever you use the elemental weapon especially thunder weapon (tested it out on Nergigante using Tobi bow) But the weird thing is, if you use charge axe, when you do the charge your blade thing, the framerate will stutter. But when you do the SAED, and a bunch of explode happen. Your framerate won't even drop ???
The heck is wrong lol.
Also the best weapon in game also a framerate murder, Cluster Bomb. My Fps drop to 30 when I try to use it on Nergi lol