I've actually gotten that fatigue on my latest playthrough of FFX myself. Part of it is probably the half-assed effort of the remaster but for the first time, I'm genuinely starting to see why a lot of people don't like the game and its characters.

Luckily I've had the opposite experience just finishing MGS3 HD - it reminded me why I fell in love with Kojima's military fantasy world and its iconic characters. I remember when completing MGS3 and 4 each for the first time, I took the discs out to put them back in their case, only to change my mind and put them back in to start a new playthrough.