Wow, it has worked for me too in Mojave with the old CUDA 8.0.90 driver.
MacBook Pro 15" late 2013 with NVIDIA GeForce GT 750M 2048 MB.
However, newer Premiere versions still won't activate CUDA rendering, because they require CUDA version 9.2 or even 10.1.
Which is a pity, because Premiere really
renders faster with CUDA.
So, is there a way of either
patching the new CUDA driver to be used by the MacOS or get Premiere to be more downward compatible?
I have tried installing all newer drivers. The driver seems to be loaded by MacOS (according to System Profiler), but won't be accepted by Premiere.
Also, the
CUDA-Z program will only work with CUDA 8.0.90 in Mojave, which allows for an easy check.