babylon.js framerate frame rate forum

In Babylon.js, the frame rate (FPS) is primarily handled by the browser's requestAnimationFrame loop, which defaults to the monitor's refresh rate (typically 60Hz or higher).If you are looking for discussions or technical help, the Babylon.js Forum is the official community hub for performance-related topics.Common Forum Topics & SolutionsBased on community discussions, here are the most frequent framerate-related issues and their standard solutions:Measuring FPS: You can get the current frame rate using engine.getFps(). For more precise data, the forum recommends using SceneInstrumentation to track frame time averages.Limiting Framerate: While there is no native engine.setMaxFps() method, the common forum advice is to use a custom render loop with a setTimeout or a time check inside engine.runRenderLoop to skip frames.Physics & Delta Time: A frequent "gotcha" on the forum is physics or movement speed being tied to FPS. To fix this, you should multiply your movement values by engine.getDeltaTime() to ensure consistent speed across different hardware (e.g., 60Hz vs. 144Hz monitors).FPS Drops: If you notice sudden drops (e.g., 60 FPS down to 30), it is often due to VSync or browser capping when the engine cannot maintain the full refresh rate.Performance Optimization ResourcesIf you're troubleshooting a low frame rate, the community points to these official tools:The Scene Optimizer: A built-in tool that automatically lowers rendering quality to reach a target FPS.Inspector V2: Use the performance tab in the Babylon.js Inspector to identify bottlenecks (CPU vs. GPU).Thin Instances: For scenes with many similar objects, the forum highly recommends using Thin Instances to significantly reduce draw calls and boost FPS.