I'm having an issue editing HD terrain when there are digholes on the route. The edits do eventually take but reaction is very slow, to the point of the cursor heavily stuttering along the terrain or freezing up briefly). It makes editing an HD route pretty much impossible. I have tried with both a converted route and a route from scratch. The routes are my own, and are not very large (the current test bed is a single baseboard). I have tried every 1x1 or 10m dighole I can find. If I delete the digholes, HD editing performs perfectly. Anyone else having issues anything like this??