Clouds

Found in the Cloud category on BP_DynamicVolumetricSky.

Setting	What it does
Cloud Quality	One of Ultra Performance, Performance, Quality, Ultra Quality. Scales raymarch step counts. Pick Performance for shipping games on mid-tier hardware; Ultra Quality for cinematics.
Cloud Fly Option	Possible to Fly Through enables full 3D volumetric clouds you can move the camera through. Not Possible to Fly Through switches to a cheaper sky-dome cloud (visually similar from the ground, much cheaper, but breaks if the camera flies into them). Use the cheap path for ground-only games.
Layer Bottom Altitude	Height of the cloud bottom (meters).
Tracing Start Max Distance	How far the raymarcher reaches horizontally. Lower means shorter render range and higher framerate.
Tracing Max Distance	Vertical reach of cloud rendering. Lower means denser-feeling clouds at lower cost.

Tip

For most games, Cloud Quality = Performance and Cloud Fly Option = Not Possible to Fly Through is the sweet spot. Only enable fly-through clouds if your game has flight or aerial cameras.

Where to next

• Performance tuning: cloud knobs are the highest-impact perf saving
• Fog and atmosphere: the volumetric fog pass interacts with cloud lighting