Hi[USER=ā125614ā][/USER]
You should take a look at: .simul.co/unrealengine/Clouds.html . There are a lot of settings you can tweak from blueprint. You dont need to randomize it, you can start from a base keyframe with settings you like. Yeah you can have smooth interpolation, but you need to change the interpolation mode (by default its set to fixed). Anyway I would recomend you to take a look at the doc, there are lots tips on how to do certain things 