It seems that the EXP arc is a bit more unstable than I realised; at around Lv.61 it starts to get unpredictable and becomes even more so going through Lv.80 and onwards. I may need to either go back to using the traditional EXP arcs which could potentially cause some visual glitches to occur with the player's EXP gauges (until they level up once, then it should correct itself); while the visual glitch itself is seemingly harmless & temporary, the reason I stopped using the original EXP arcs in the first place was because players were leveling too fast in v1.1 and finding themselves overpowered just by playing normally (as in, with little or no grinding).
Since then, the EXP given by enemies has been adjusted and a Lv.70 cap was put into the enemy AI but I'm not sure if it's enough to keep the Lv.40-50 range I'm aiming for players to reach Disc 3 at. When 1.3 is released, I'd appreciate people keeping an eye on their levels and telling me when exactly they reach Lv.50 and a little about their playstyle (for instance if you fought everything once, or never ran from battles, or ran from most battles, etc.)