That is probably more support than any one person could ever expect!
I tried most of what you proposed above and here are the results.
I have around 25 addons I use, and the fact remains that IF I also use Dugi, my game will freeze up and if I uninstall DUGI, the game is almost flawless. Just now, I went into Wintergrasp and for the third time in a row, about 2-4 mins in, everything in the BG freezes up. I see no progress on the screen at all, and I can run all over the map and not be able to do anything. Uninstall DUGI and it all works fine.
I have stated many times I would not play WOW without this addon and I will remain faithful to that comment. Alas, I have stopped playing WoW. I will check back to see if you guys have found a solution, but for now, the game is unplayable with Dugi.
I am very sad that this is happening. I am not sure what I am going to do in my sudden found free time.