Game crashes after credits plays in pokemon Omega ruby

So I just beat the elite four and the champion. After that, the game saves in the middle of a cut scene. The game crashes after the credits play after the cut scene, which softlocks the game. What should I do? Should I try to go through the credits again to see if it works net time?
The ROM is not corrupted ether.

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I ran the game at half speed, and it barely got past the credits. It froze for a but but at least I got through it. I also had to under clock. I need a better way to fix it when my brother does it.