How to Fix "Unity Performance Drops When Running on Mobile"

If Unity is showing performance drops when running on mobile devices, it could be due to inefficient rendering, poor memory management, or unoptimized assets.

Here’s how you can address performance issues on mobile: Start by checking the Profiler to analyze the performance of your game.

Go to Window > Analysis > Profiler and monitor the CPU and GPU usage, draw calls, and memory consumption while running the game on your mobile device.

The Rendering section of the profiler will show how much time is spent rendering objects, which can help identify performance bottlenecks.

Mobile devices have limited resources, so reducing the number of draw calls is critical for good performance.

Consider using Unity’s Static Batching and Dynamic Batching to combine meshes and reduce draw calls.

Go to Edit > Project Settings > Player and check that Static Batching and Dynamic Batching are enabled under the Other Settings section.

Another key factor is optimizing your textures.

Large textures can quickly drain memory on mobile devices.

Make sure to reduce texture resolutions for mobile, use compressed textures like ASTC, and avoid using high-quality textures unnecessarily.

Unity's Texture Import Settings can be configured for mobile platforms by selecting the appropriate compression format and adjusting the texture's resolution for optimal performance.

Memory management is also critical for mobile devices.

Use Unity’s memory profiler to identify memory usage and look for leaks or excessive memory consumption.

Go to Window > Analysis > Profiler and track memory usage during runtime.

Additionally, avoid allocating too much memory at runtime by minimizing the use of large textures, meshes, or materials.

If you’re using complex shaders, consider simplifying them for mobile devices or using simpler mobile-friendly shaders available in Unity.

Additionally, consider using Unity's lightweight rendering pipeline (LWRP) or Universal Render Pipeline (URP) for better mobile performance.

These pipelines are designed to provide high-quality graphics while reducing the performance load on mobile devices.

Finally, optimize your scripts by reducing expensive operations like frequent Find() calls, Instantiate() in Update(), or high-frequency physics checks.

Profiling your game using Unity's Profiler and optimizing assets, shaders, and code will help you reduce performance drops on mobile devices.