V-ray uses different cores while rendering. Why?

[four_hands]

Hi,

I've noticed this issue in both V-ray Next and Currently using vray 5 that sometimes it's use full cores of my pc x56 cores and sometimes it only uses x28 cores. Is there any reason behind it. Can you please help to use all time x56 cores.

Thanks
Tausif

[hermit.crab]

Try manually setting the active threads with the VRAY_NUM_THREADS=N environment variable where N is the number of threads you want V-Ray to use and see if that makes any difference.

[four_hands]

Try manually setting the active threads with the VRAY_NUM_THREADS=N environment variable where N is the number of threads you want V-Ray to use and see if that makes any difference.

Thank you! Changing variables fixed my problem.