Hello @Sequaris ,
can you have a look, if the Resolution Buffer is toggled in the Blueprint?
The buffer decouples the resolution of the nebula and the screen resolution.
Oh and project looks pretty nice and sounds very interesting!
We would like to see and hear more about your project. (Feel free to email us if you like!)
Best
Lee
Ps: It is actually important to note that changes in the Unreal Editor while being in Play-Mode are not persistent!
This can be very confusing sometimes!^^