Hello, thanks for your intereset on the asset.
The clouds use raymarching to be drawn into a mesh cube. The action occurs inside this cube, so the material is drawn on its inside. The material is complex with a large number of instructions, and you specify the amount of samples from the procedural textures’s density you want per pixel at camera fustrum. This amount of samples is called Raymarch Steps, you also can specify the amount of steps the code will use on the shadowing, so there is a product between RaymarchSteps and RaymarchShadowing Steps. Despite the amount of steps used, the GPU will only draw the amount of pixels from the camera perspective. So, a flight inside the clouds is cheaper because you are close to them or even inside, so I stop raymarching as soon I reach full density. The camera movement inside the clouds might produce artifacts depending on the speed, and since it is cheaper draw the clouds while passing inside them, you can increase the RaymarchSteps while flying moving into its direction and when inside.
There is an old video which I show the feature of flying by them: https://youtu.be/rkSBIx_rZjc and Im also preparing a demo executable where you can fly inside the clouds and there is also a high density florest. The demo will be done till Friday November 17th. Also there is a preview of this demo, with an empty landscape at the 1st post.
The best use case for the asset is from the ground level clouds. My intention is to produce a cloudscape as good as the one you can see in the game Horizon: Zero Dawn. So it is still being perfected to that point, but the result up to now is very pleasing. For flight simulator it still needs improvements, for example: I still need to change the shader to work on a curved mesh instead of a box mesh. This would significantly reduce the area GPU would care to evaluate. You can use it as it is for a flight simulator, making the mesh really big and moving this mesh along with the Character. The main material is already set to be able drawn the clouds seamlessly during the flight,
I hope I could answer your doubts. I would really appreciate you considering the purchase, because the product is still young and will be receiving updates to improve for sure, and now it is quite cheap, with its price probably increasing as soon it reaches maturity.
Cheers!