Hi,
I'm using corona 9 daily build, I've noted that if i load a corona proxy (empty) the viewport drastically slows down, if I turn off, in c4d settings, all the file assets path the viewport back to moving smoothly. This happens in an empty scene.
I'm using c4d R23, I also downloaded the trial of c4d s26 to check if it depends on c4d but the problem is the same.
I've done a video to show the problem.