According to Occipital, a system that can support a 3xxx RTX video card should be fast enough to do everything in CPU mode. Therefore not need GPU. It uses Cuda 12, and they would have to change from Cuda 10 to Cuda 12, which would loose the previous versions. I am not certain why they cant post 2 versions on the download with a quick check of the video card. Of course i do not work for them.