Intermittent freeze during the game. about wiiflow HOT 2 OPEN

By the way, I just read from other forums that the USB drive has to be 
formatted to 32K cluster size, no more no less. I formatted mine using the 
built-in Windows utility using the default allocation size, which according to 
Microsoft is actually 16K. Will the difference in cluster size cause the random 
freeze issue?

Just an update, I reformatted the 32GB USB drive with FAT32 with 32KB clusters. 
The 2GB SD card in front is also reformatted with FAT32 with 16KB clusters 
since the 32KB option is not available. I reinstalled the game again and tried 
the games a couple of hours, and they seems to run much better and smoother. No 
freeze or whatsoever. I will continue to monitor the situation and see how.