The second half of the warning is the most frustrating: "rendering might be slower."

If you have access to the rendering settings (e.g., in a custom script or application), reduce the requested samples per thread to . Ironically, matching the cap avoids the warning and the overhead of automatic reduction.

Switch texture settings to On-demand Mip-mapping or use lower-resolution textures.

. When the engine is forced to truncate its sampling routine mid-way to stay under the cap, it often has to perform extra passes or management tasks to reconcile that data. Furthermore, if you actually

: Rendering in 4K or higher requires significant memory for image buffers.