Newer Super Mario Bros. Wii - freezes at specific point

[Freodon]

Once Mario goes into the launch star in World 7 and screen fades Bowser head-style, Dolphin freezes (but does not crash, although you have to force-quit it with task manager). I tried both .wbfs and .iso ROMs. Up until this point everything was fine, and the original NSMBWii works well too. What could be the problem?

[leolam]

Unless you can reproduce it on console, I'd be inclined to think it's a game issue.

[Craftyawesome]

Could you try:
Speed up disk transfer rate (originally sd card so)
syncronize gpu thread
JITIL
Cached interpreter