Yep, these default reporting graphs are not true at all while rendering. You need to select another report from the drop-down menu to check the GPU rendering utilization, for example, "Compute_1".

Hope this helps,
-Juanjo

hi juanjo, thanks! which drop-down are you referring to?
and would you ...

hi,

because the task manager says so. i did not know that these reports are not correct? (see image)

*edit: when using the IPR it also displays only one GPU (the image attached was captured while on IPR)

perhaps i should also mention that i get a lot of 702 gpu-memory errors. sometimes it happens ...

hola juanjo,

all 3 gpus are enabled under the GPUs tab in the options panel.

hey,

i have a 3x geforce 1080ti rig, and when rendering to disk, i see only one GPU being used.
is this normal behavior?

thank you!