I really like the ability to work with the dynamic geometry displays during edits. I am seeing that you best have a powerful machine. I also feel that this feature is not well documented.
I've had my preferences setup for horizontal alignments for stationing and annotation, but had not tried it for vertical edits until today.
I really like the fact I can immediately see stations, elevations and grades as soon as I make a change. However, I noticed one small bug. By vertical curves are set to annotate with custom terminators. These do not display during any dynamic edits. I still have to run the View Vertical Annotation tool to get them to display.