Hi, I can definitely imagine fireworks cause lag on certain devices, and ruin the smooth gaming experience for some.
Personally, this problem doesn't bother me, but I do have a few tips (which I hope you didn't know of yet :p) to make this less of an issue.
You can toggle firework particles by going to Options --> Video Settings --> Animations --> Firework Particles. This should reduce or stop lag with fireworks. Additionally, if you wish, you could turn down the volume of "Ambient/Environment" sounds in Options --> Music & Sounds :]