So I'm a level 8 sorcerer and I love the spell polymorph for all those situations where fireball isn't the answer. Usually it involves me polymorphing myself and maybe one other party member into a Great Ape or Great Shark and then we go to town on whatever we're fighting. My DM pointed out however that as a Great Shark, my intelligence score becomes 2, so he should gain control of my character until I change back because with that score I wouldn't even know that I'm not a shark. Now in the spell it says that I maintain my personality and alignment, and I have to maintain concentration on the spell. So my point is that there's noway I could maintain all of that and not know that I'm currently shapeshifting. I don't think I should be able to do complicated maneuvers or battle tactics with the rest of the party while my int score is that low, but I also don't think I should have to lose control over my character. What do you guys think?
I am talking about 5th edition D&D. The question is largely one of control perspective. When I polymorph into a low INT creature, do I maintain control or is it so low that the DM needs to take control until the spell ends?