Load Time Profiler

This is a port of the Skyrim mod Load Time Profiler by QTR-Modding that profiles your Fallout 4 startup to identify which mods take the longest to load. It measures F4SE plugin DLL load times, message callback durations, and individual ESP/ESM file processing times and exports detailed reports to CSV, TXT, and Perfetto JSON you can use to troubleshoot slow startups.

How to Use

• []Install and launch the game normally[/]

  []Wait for the main menu to appear[/]

  []Reports are automatically generated before the main menu opens[/]

  Reports are saved to:

  • []FO4: Documents\My Games\Fallout4\F4SE\F4LoadTimeProfiler\[/]

    []FO4 VR: Documents\My Games\Fallout4VR\F4SE\F4LoadTimeProfiler\[/]

    A detailed log is also written to the F4SE log directory as F4LoadTimeProfiler.log.

    Source Code

    GitHub — GPL-3. 0 license.