Set your Windows Power Plan to High Performance to ensure your CPU isn't throttled.
Leave at least 512MB for Windows to prevent the whole PC from freezing. DirectX Set your Windows Power Plan to High Performance
Manually increase your Windows paging file size (Virtual Memory) to help the system handle the low physical RAM. Set your Windows Power Plan to High Performance
For a visual walkthrough of these settings specifically for low-end hardware, watch this guide: Set your Windows Power Plan to High Performance
Lowering resolution is the fastest way to gain FPS on low-end hardware. 160 Lower DPI reduces the rendering load. Frame Rate 30 FPS
Before opening the emulator, prepare your Windows environment to dedicate maximum resources to the task.
Use the Task Manager to kill non-essential processes (like browsers or background updates) before starting MEmu. Step 2: Optimized MEmu Engine Settings