yes and no... as far as i know, the AI will act smarter and try move towards point of attack... problem is, a rogue that goes down the thief tree, has a action and two bonus actions, meaning you cant really catch them... secondly you have improved invisibilty ( i asume it is in as 4th level spell ? ), and you can also use haste, extended haste, wich gives you a real extra action...
At this point its speculation, but it do sound like there is improvmenets to the AI, and that is the only saving grace that can fix this or partly
