How can I Fix This ?

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Rendering\NaniteStreamingManager.cpp] [Line: 1453]
Cannot allocate more root pages 49152/49152. Pool resource has grown to maximum size of 2048MB.
512MB is spent on streaming data, leaving 1536MB for 49152 root pages.

Hey @HJ_Park,

You can try to change the Root Page Pool size to a higher value.

  • Go to your Config folder and open your project’s DefaultEngine.ini file.
  • Update the value under SystemSettings section.
    r.Nanite.RootPagePoolSize=

Beware the default value is 49152 so increasing it will require available memory.