This patch aims to fix the movement stutter above 50FPS. The game uses FixedUpdate for movement updates, and due to it sticking to Unity's default FixedUpdate rate of 50Hz, this results in stutter at 60FPS or higher. This mod simply changes the FixedUpdate to run at 1000Hz (1ms) instead, as that evenly divides by most framerate targets that are realistically going to be targeted by most people. From my testing, it behaves fine when using VSync at a locked 144FPS.
2. Drag the "globalgamemanagers" file from the "SuperNeptuniaRPG_Data" folder in the game directory onto the Browse button in the ROM file section, and drag the IPS patch into the Browse button in the Patch File section.
3. After pressing "Apply Patch", copy the downloaded file to the "SuperNeptuniaRPG_Data" directory and make sure to rename the file to "globalgamemanagers".