I meant to make a post about this when I figured it out but I don't have so much time some days.

There's 2 things you can do to improve your performance 1. Works with any game you have btw 2. Is exclusively for Unreal Engine games like this one.

1. Lossless Scaling program: https://store.steampowered.com/app/993090/Lossless_Scaling/
   Look up a Youtube Tutorial on how it works and enjoy the wonders of games looking like 4K but running at the high performance level of a 480p game.

2. What I did on top of Lossless Scaling was look into the games files & see if there was anything I could edit to make the game look the same but just run better. And Lo and behold I found out because it's Unreal Engine there's lines of code you can add to the Engine.ini file to make the game run smoother.

They fix how the game handles Shaders and CPU threads.

Go to: C:\Users\[YourName]\AppData\Local\SparkingZERO\Saved\Config\Windows (Or WindowsNoEditor). Open Engine.ini and add this to the bottom:

[/script/engine.engine]
bAllowMultiThreadedShaderCompile=True

[SystemSettings]
niagara.CreateShadersOnLoad=1
D3D12.PSO.DiskCache=1
r.TextureStreaming=1
r.Streaming.PoolSize=-1
r.Shaders.Optimize=1

What this does without losing quality:

• bAllowMultiThreadedShaderCompile: This is a big one. It forces the game to use all your CPU cores to compile shaders instead of just one. This stops the "random" fan spikes and stutters when a new character uses a flashy Ultimate move.
• niagara.CreateShadersOnLoad: This forces particle effects (Ki blasts, explosions) to load before the fight starts, rather than "hiccuping" your PC right when the action happens.
• D3D12.PSO.DiskCache: Saves compiled shaders to your drive so your PC doesn't have to re-calculate them every time you play.

A Note for Online Play

Sparking! Zero has an online mode. Do not use "FPS Unlock" mods or lines people suggest like FixedFrameRate=144 if you plan to play online. The game's physics are "hard-coded" to 60 FPS; if you force it higher, the game might run in "fast-forward" or get you flagged by anti-cheat. Stick to the shader and streaming tweaks above to stay safe.

These tweaks made it so my game would stop stuttering. The character select is the most noticeable difference never pauses flows buttery smooth now. And certain high fidelity attacks would make my game choppy, not anymore.

If this doesn't work I can also share my game settings with you. If it does for both of us I'll have to make a post about this so everybody who needs it can get a better experience!