Gods Eater Burst (ULUS10563): Excessive bloom #5562 - GitHub
Specifically for .gim manipulation. GIMTool converts between .gim and .png without losing swizzle data (the unique pixel arrangement PSP GPUs require).
Too many large textures exceeding the emulator’s texture cache. Fix: Increase PPSSPP’s "Texture Cache Size" to 512 MB or higher. Also, convert your replacement textures to BC7 or ASTC compressed formats using texconv .