Task Priority When Set to LoArguments are three characters: [ThreadPriority][TaskPriority][TaskPriorityIfForcedToNormalThreadPriority] where ThreadPriority is 'h' or 'n' or 'b' (high/normal/background) and TaskPriority is 'h' or 'n' (high/normal). Example: fx.Niagara.TaskPriorities.Low bnh
Usage
fx.Niagara.TaskPriorities.Low [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.