I have to say that I am impressed with the improvements Monroi has made to their live game transmissions. The current site is very nice and seems to be working pretty well. It is much better than what I experienced in the past.
But (at least on my computer) it can still lose moves and pieces can disappear off of boards. Nevertheless it’s quite usable, and there are generally ways for the user to get the site to recompute and fix the glitches.