I don't see things as being slow related to snaps. I don't have to wait for the circle to show up at a snap point. The cursor icon changes to a check mark or a solid pencil. Also you can type Q to get a snap point to highlight quicker. However, the rubber band references could be a bit quicker to display once a snap is highlighted. Finding the midpoint between two highlighted snap points is a waiting game.
I do have lots of trouble getting a tracking point option to work (not sure it is even possible in all commands). What I mean by tracking point is placing the start point of something at an offset location relative to an already drawn location such as a corner, endpoint, center point... I almost always have to place the object or draw the line and then move it (multiple steps) or draw construction lines place the object or drawn wanted line-work then erase the construction lines. In AutoCAD, during any drafting command, I could type (command line) TK to get a tracking function so I rarely needed construction lines. I know there are guideline options, but you still end up with a bunch of them which at some point need to be removed, granted there is one commend to remove them, but it takes extra clicking to do it.
