I want to share a quick info about using Resolve 8.2 and CUDA 4.2.
From tests at our workflow machines we erperienced issues using Cuda 4.2; it pops up with RAM (allocation) errors (4 or 3 GB instead of the installed 6GB). You can click the message ok and ignore it, but after about 45min of rendering Resolve brings up an error "out of memory"; rendering still goes on in the background but will crash sooner or later.
Therfore downgrade to 4.1.28: no issues.
You can find the 4.1 release over at Nvidia: http://developer.nvidia.com/cuda-toolkit-41-archive