This improves performance in scene synchronization when there are many mesh, hair and volume objects. Sync time speedups in benchmarks: barbershop 5.2x bmw 1.3x fishycat 1.5x koro 1.0x sponza 3.0x victor 1.4x wdas_cloud 0.9x Implementation by Nicolas Lelong, and Jagannadhan Ravi (AMD). Differential Revision: https://developer.blender.org/D9258