24 hours (wall clock, not CPU time) is a little long, but it's not unheard of. With MC path tracing, the noise you get is pretty difficult to resolve, and a lo

24 hours (wall clock, not CPU time) is a little long, but it's not unheard of. With MC path tracing, the noise you get is pretty difficult to resolve, and a lot of companies are using denoisers afterwards to clean up the renders, as it's just not cost-effective to keep them rendering to that extent as denoising is faster.