When the cache of my rendered scene is too large, loading files causes network congestion, which is understandable. The problem is that after loading the scene for a long time, the CPU becomes lazy and only has single-core rendering, which results in rendering time tens of times longer than normal! How do I make the CPU multi-core rendering after loading the scene?
Karma or arnold has the same problem！

Can it be it loads textures over the network for a long time? Tried to use HOUDINI_TEXTURE_DISK_CACHE variable?

Heileif
HOUDINI_TEXTURE_DISK_CACHE

it happened even no textures, bgeo caches will cause this problem too.