> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lynxhub.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Performance Settings

> Configure GPU acceleration, memory allocations, caching, rendering profiles, and hardware parameters.

Optimize LynxHub’s speed, resource consumption, and graphic rendering capabilities to match your hardware.

<Warning>Most changes in the **Performance** settings tab require you to restart the LynxHub application before they take effect.</Warning>

## Rendering and GPU acceleration

Adjust how visual assets and pages are rendered:

* **Use Hardware Acceleration:** Enables GPU-assisted UI rendering. If you experience UI freezing, lagging, or black screens, disable this setting to fall back to CPU software rendering.
* **GPU Rasterization:** Offloads layout and page drawing tasks to the GPU. This improves scrolling performance and animation smoothness.
* **Zero-Copy GPU Buffers:** Optimizes image and video memory transfers directly between your system RAM and GPU VRAM. Disable this if you notice visual glitches or checkerboard rendering artifacts.
* **High DPI Support:** Enables high-resolution scaling. This prevents blurry layouts on 4K or high-density monitors.
* **Enable Skia Graphite:** Enables Skia Graphite rendering. This uses the Dawn backend by default.

## Media and execution

Optimize local script and media execution:

* **Hardware Video Decoding:** Uses GPU hardware to decode videos. Disable this if web players freeze or crash during playback.
* **WebAssembly SIMD:** Enables Single Instruction Multiple Data (SIMD) vector optimization for WebAssembly runtimes. This improves execution speed for local AI web interfaces.
* **Parallel Downloading:** Enables multi-connection downloading to accelerate file download speeds.

## JavaScript and cache limits

Manage heap sizes and disk usage:

* **JavaScript Memory Limit:** Sets the V8 JavaScript engine’s maximum heap allocation.
  * **2 GB:** Minimizes RAM footprint. Good for budget setups.
  * **4 GB (Default):** Balanced limit suitable for most developer and user environments.
  * **8 GB:** Allocates a larger heap. Useful when loading huge datasets, large AI modules, or complex WebAssembly layouts to prevent "Out of Memory" crashes.
* **Disk Cache Size:** Controls how much disk space is allocated to browser caching:
  * **Default:** Uses browser-managed defaults.
  * **256 MB:** Small footprint for devices with limited storage.
  * **512 MB:** Balanced cache limit.
  * **1 GB:** Large cache capacity to accelerate load times on frequently visited sites.

## Display and color

Configure color gamut outputs and autoplay policies:

* **Force Color Profile:** Forces the rendering engine to output using a specific color space:
  * **Default:** System-defined color profile.
  * **sRGB:** Standard color gamut suitable for most displays.
  * **Display P3:** Wide color gamut recommended for compatible high-dynamic-range (HDR) screens.
  * **Color Spin (Gamma 2.4):** Alternative gamma calibration profile.
* **Media Autoplay Policy:** Configures when audio and video play automatically:
  * **Default:** Follows standard browser autoplay restrictions.
  * **Allow Autoplay:** Allows video/audio to start playing immediately without requiring interaction.
  * **Require Gesture:** Requires some user interaction (like scrolling or typing) before playing.
  * **Require Page Activation:** Requires a click or touch event on the page before playback starts.

## Advanced hardware overrides

Overrule standard graphics limits for advanced setups:

* **Force High-Performance GPU:** Enforces the use of a discrete, high-performance GPU on multi-GPU systems (such as laptops with integrated Intel graphics and a dedicated NVIDIA/AMD graphics card).
* **Ignore GPU Blocklist:** Overrides Chromium's internal driver compatibility checks. This allows you to force hardware acceleration on older or unsupported graphics drivers, but may cause rendering crashes.
* **Disable GPU VSync:** Bypasses vertical synchronization limits. This reduces input latency for terminal entries but can cause noticeable screen tearing.
* **Disable Frame Rate Limit:** Removes the default 60 FPS rendering cap. Enabling this makes scrolling feel buttery smooth on high-refresh-rate monitors (120Hz, 144Hz+), but increases power consumption and heat generation.