Just wondering if anyone else has run into this problem.

I usually stack my recruited hero's with my sovereign and just run around with them. The recruited hero's usually end up being timed with the increase in stack size and it seems to work nicely. I've noticed since I've started playing the new DLC's that probably around turn 120-150 the XP I get from taking on even 'deadly' stacks of enemies goes down to around 15 or 20 .. and that's it?!?! I tried taking out each hero in the stack to see if it was an injury or item that one had gotten that was reducing it, but that didn't change anything. I then took just my sovereign out and put him with another stack of henchmen I had, and the XP he got from the same stacks went up to about 80! Is this working as intended? Or am I missing something?

Any input on this is greatly appreciated!

Thanks