VRay RT GPU not using both GPUs - only one

[padre.ayuso]

@Morbid_Angel

What V-Ray/3dsMax version you are using?
Which Device Selector you are using, in the latest versions the Device Selector is available in the Render Settings UI but it is also available as a separate tool under the Start Menu > Chaosgroup > V-Ray RT folder:

Does the VRAY_OPENLC_PLATFORMS_x64 environment variable exists in System or User Environment Variables?
Does the issue appear on both OpenCL and Cuda engine?

Please use the Nvidia GPU Utilization tool which comes with the drivers:
C:\Program Files\NVIDIA Corporation\Control Panel Client\NvGpuUtilization.exe

Thanks. It seems to work fine now not sure what had happened on my previous scenes. I’ll be testing DR with VRay RT GPU afterwards, unless you think I should make it a public concern and put it on the forum, I’ll write to you afterwards if I have some issues, which I had about two months ago.