FFS, how the hell am I supposed to beat Dragons on "Nightmare" when my characters freeze during battle!? It happens WAY too often (almost every battle), and when you have fire traps, baby dragons, and the big-ass mama all trying to kill you, I can't be worried about my character hitting a freeze patch so that they can be a direct target for her.
I put so much money into this game, and I expect it, at the very least, to work on a fundamental level.
There are two possibly three ways to deal with the generic ** freeze glitch when it happens.
1) Switch to the frozen character and tell it to jump. I have read that you can also just issue an attack command (shield bash etc.) but don't remember this working for me;
2) Use 'disengage'. The whole group stops for a second but will start attacking again as soon as they notice the enemy.
This glitch showed up after Patch 1.7 and may be caused by a basic problem with the Frostbite engine. Because of that the glitch may not be fixable from Bioware's end unless they make a complete change in the party AI system. Its complicated. Anyway there is likely never going to be a solution to this problem.
Fighting dragons at knightmare level is actually pretty routine for me. The big compensating factor for glitches or other weaknesses in the AI in DAI is that you can make weapons, gear and potions that can make you pretty overpowered (any tier 4 stuff with 'guard on hit'). Most of the time when there is a freeze I'm able to deal with it before any real damage occurs. Other times I just reload the auto-save just before the battle. I actually think it adds to the challenge of the game in that you have to keep checking how your party members are doing -- which makes some sense in that you are supposed to be their leader. Lots of games have glitches or bad elements of gameplay, you either ride with it or don't.
** There is another freeze glitch I noticed after Patch 1.10. This is where Blackwall is in the party and where he is set up as a 2 hander and possibly where he is using one of the unique swords, its been a while so I've forgotten the details but it can cause Blackwall or sometimes the Inquisitor(?) to freeze up completely.