Performance
Reference
Panel:
Properties ‣ Render ‣ Performance
High Quality Normals
Uses higher precision normals and tangents which can improve visual quality for dense meshes with high frequency textures at the cost of memory.
Memory
Shadow Pool
A bigger pool size allows for more shadows in the scene but might not fit into GPU memory and decreases performance. Increasing the size might fix the Shadow buffer full error.
See also
Light Probes Volume Pool
A bigger pool size allows for more irradiance grids in the scene but might not fit into GPU memory and decreases performance.
Viewport
Pixel Size
Option to control the resolution for viewport rendering. Allows you to speed up viewport rendering, which is especially useful for displays with high DPI.