Well, I was really annoyed with my ship movement last game.  I would give the command, the ship would freeze for a few seconds, then teleport ahead.

This game, issue is not there.  And I realized that what was causing the problem was excessive exploration treaties.  Earlier game I have 20 treaties going on an insane map.  I saw some slow down on current game with 5 treaties on insane.  As the treaties concluded, ship movement improved.

This was a major hang-up for me.  I am quite pleased.