Hi cbporter,

I may be wrong, but It looks like you are trying to display every single update while you also want quick display.
Maybe you should disconnect display frequency from update frequency by appending all text adds in between two displays in one big text update (if this is possible with you're needs of corse)

I did something close to this when managing undo stack in my GraphCtrl : when doing quick zooming or panning (less than 300ms in between two actions), I append all actions in order to make one final undo action.

Hope this helps

edtPane.Insert(edtPane.Total(), str); // I added a test getter for total

edtPane.Insert(edtPane.Total(), str);
edtPane.ScrollEnd();