Can I set to use both cpu & gpu on the network rendering?

[konstantin_chaos]

The GPUs are integrated as we are still waiting on ordering external GPUs. Does CUDA not support integrated GPUs?

If you are referring to the NVIDIA GeForce GTX 1650 SUPER it should work just fine.
I'd suggest you run the GPU Device Select utility tool that comes with V-Ray on the nodes and make sure that all the devices are active.

Konstantin