That was actually one of my biggest problems with the lock, it was terrible being a lala on top of it lol. There is a way to adjust the camera height, like crtl+shift then up/down on the arrow keys (for pc). But it didn't seem to affect the height while locked on, and I'm not sure if it works on ps3/4 if you're on one of those.

Best way to mitigate that I've found is reduce the size of cross hotbar UI element and shove it down as far as you're comfortable with. Another thing I did was disable the action help text that pops up when you hold L2 or R2 (the one that tells you the ability name). It's somewhere in the settings but I forget exactly where, it's just a check box you uncheck.

There's no true way to fix it that I've found, just a few things to help it not be so bad.