Maximum elements per GPU buffer, for example 4k elements would restrict a float buffer to be 16k maximum per bufferNote: If you request something smaller than what will satisfy a single unit of work it will be increased to that sizeDefault 0 which will allow the buffer to be the maximum allowed by the RHI
Usage
fx.Niagara.Emitter.MaxGPUBufferElements [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.