App freezes please fix – Ultima IV: C64 Review

Yes, awesome revival of this game, but no good if it freezes. Rebooting the ipad does nothing. It started freezing once I acquired ship (frigate). Once I got off the ship and tried entering lord British's castle, it froze. I restarted the game and it was stuck frozen, it just says "entering castle".
Review by Pianodirt on Ultima IV: C64.