VRAM HardwareLimit?

Got A ERROR HERE
Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Rendering\NaniteStreamingManager.cpp] [Line: 1342]
Streaming pool size (2048MB) must be smaller than the largest allocation supported by the graphics hardware (2048MB)

RTX4090 with 24GB VRAM and a boardAPU 512MB

Try to set a high value to solve texture poolsize over budget(usually do this while work in studio),
but when i start personal work to do so, it just crash.
I can manually set this value in defaultengine.ini and it works,but i still can‘t change it in UE console cmd