Number of passes - the light cache is computed in several passes, which are then combined into the final light cache. Each pass is rendered in a separate thread independently of the other passes. This ensures that the light cache is consistent across computers with different number of CPUs. In general, a light cache computed with smaller number of passes may be less noisy than a light cache computed with more passes, for the same number of samples; however small number of passes cannot be distributed effectively across several threads. For single-processor non-hyperthreading machines, the number of passes can be set to 1 for best results.
مشکل شما اینه که از پردازنده ای با هشت threat استفاده میکنید که احتمالا از خانواده i7 باشه ولی تو Number of passes تو لایت کش عدد 2 رو انتخاب کردید که 6 ورودی پردازش اطلاعات بیکار مونده هنگام محاسبه لایت کش
این بیکاری فقط تا زمان محاسبه لایت کش ادامه داره و بعد از تموم شدن محاسبه لایت کش با حداکثر قدرت رندر ادامه پیدا میکنه ...
