I am playing with tier 6 graphics, I got all the graphics options enabled in the game and it certainly is tier 6 instead of tier 5.

However, my character's boobs are very angular, just like in tier 5 graphics. Before my hiatus I played for a couple of months with tier 6 graphics and the boob models are very round and smooth, completely different.

I checked the graphics options in the Japanese launcher but there is nothing about models, I got tier 6 activated and both textures and shader set to high quality.

How can I get tier 6 boob models and get rid of the crappy tier 5 models?