I have also encountered occasional lag - usually only in certain areas but never game breaking - could save and reload and the problem would be gone - however lag was few and far between.
Now, since dragonborn, I have encountered game time freezing - for example - casting a spell, switching weapons, swinging a weapon,etc.. - they usually always involve an action but it does require me to manually turn off Xbox, restart, and load last save.
Is the game getting too big - are we going to have more and more freezing issues - it is extremely annoying - is requiring me to save a lot more often and really pisses me off if I it happens and it has been awhile since my last save
Issue needs addressing!!!! If more dlc means more issues and freezing then I am out!