Vray only rendering one bucket per cpu

Ok this is weird, never had this problem before.

For wahtever reason after vray calculates the GI for the image it only renders one bucket per CPU… any ideas?

Edit…seems to be connected to DR. Turn it off and it renders fine

edit 2 - tracked it down to one computer rendering all the buckets in black all most instantly, resulting in render 95% of the image in about 2 secs.

I ran into this issue today as well. Seems to happen when you accidentally have an older version of VraySpawner running, when the rest are all running a newer version.

Also had this occur to a slightly lesser degree from having a spawner running as a service, rather than just on the taskbar. After I removed the service, it rendered perfectly.