OK, I see. How is it if you are, say, in the elements tree and have some element selected, and then go on to select another element? Does the marker change position right away, or is that also a bit laggy?
Laggy isn't anywhere near the word. It is almost impossible not only that but when one tries to move the selected element the whole thing goes crazy jumping up and down like a cat on a hot tin roof. It also is laggy when selecting a different element on that bottom menu thingy. The when selecting things for styling for example changing font size or widths etc oh and that jumping about when trying to change font size is back with a vengeance. All in all for me it's like going back in time.