Is there any reason why the AI traffic is a mile behind me when I'm holding short of the runway awaiting take off clearance? Is it a bug in FSX or is UT2 causing this?

Using My Traffic X. Wish I knew how to correct this. Guessing therefore it must be a bug in FSX. I was taxing out today in Trondheim (Norway) to Runway 9, and the following AI plane was told to stop/start about ten times because of me keeping a steady 12 mph in front of him; really annoying. Wish there was an answer?

In this case could anyone confirm if this was addressed in P3D?

It could be the taxiway. 

 

As I understand it, FSX taxiways are designed sort of like modern railroads.  With modern railroads, the rail line is divided into "blocks", only one train is allowed to occupy a given block at any given time.  With FSX, if you open the airport with a program like Airport Design Editor X, you can look at how the taxiway is built.  If there are no "taxi points" between the hold short point and the entrance to the taxiway from the terminal or another taxiway, then only one aircraft is going to be in that block at any given time.  If you place additional taxi points along the taxiway, you will create additional blocks and you might end up with a conga line of aircraft waiting to take the runway.  The downside to this is if there are several aircraft taxiing at the same time you will hear non-stop ground control commands to stop and then resume taxiing.  This is AI ground control preventing more than one aircraft from occupying a given block.