Just a spoiler of the new clouds being worked on. Just fixed the volume seams issue and going to work on the tools to help refine shapes and generate the textures. I am heaving peak ok 120FPS on editor with UE4.25, in full HD having 80 FPS without any new performance feature active and with same raymarch steps.
It is a matter of finishing the new tools quickly, fix the demo maps and send to the Marketplace. There are two things to note here: from UE4.17 to 4.20 the performance is at least 30% worst because it won’t use the real Volume Textures (3D) and will use the PseudoVolume Textures (2D as a flipbook). The real Volume Textures present a better performance from 4.21 to 4.25 have being improving and it is stable.
About the videos with tutorials, they are completely necessary, even for long term users for the asset, the new system using the spherical shader and the way to generate the new textures are different in few aspects and there is now the necessity of having a coverage texture which is similar to a distance field which tells where there will be clouds and this is one of the tools I am working to help achieve the quality seem in the picture above.