Yeah. With my pov-ray workload the least efficient part is povray loading the complex scene. And that's not multithreaded. The solution that works for me is tha

Yeah. With my pov-ray workload the least efficient part is povray loading the complex scene. And that's not multithreaded. The solution that works for me is that I can just start ncore frames concurrently, or just two, but stagger them a bit (thus there's always one frame doing parallelizable work and can use all cores, even if the other is not). But at that point it may get into RAM constraint, or some as yet unmentioned inter-frame dependency/caching.