Problem with Pokemon Platnium

Every time this Galactic dude is about to open the portal to the reverse world, my emulator freezes.....I don't understand this. Its the only part where it does that.....during the cut scene. I can't advance to the game thanks to this problem.anyone experienced this?
any help would be appreciated,
Thanks.

Please...any help would be appreciated.

common issues thread
https://www.romulation.org/forum/index.php?topic=1462.0

We also need to know what emulator you are using. The more information you give us, the better solutions we can provide.