I am representing a sensor at a certain frame rate. When the frame rate of the sensor is faster than the Unreal rendering, I am doing interpolation to generate images (using sceneCapture2D) between frames. I am able to move objects and to set the age of my Niagara particles systems. Everything is working fine when I have CPU particles emitters. However, when I use GPU particles emitters, they do not seem to be updated using the methods Set Desired Age and Advance Simulation. The GPU particles systems are only updated during the Unreal rendering loop. So my question is why the Advance Simulation method does not work for Niagara GPU emitters and how can I fix my problem?