when to use Aggressive I/O Mode in AnyDVD?

I have installed AnyDVD software in my computer. These are very interesting software as it removes restriction from movie DVD. The problem is that I don’t have any idea what is the function of Aggressive I/O Mode in AnyDVD. I also don’t know when to use. Does anyone know the function and when to use Aggressive I/O Mode?

The "aggressive I/O mode" is the default mode before the release update 6.6.2.3 of AnyDVD.
From then now the default mode is the ‘safe mode’ to avoid the conflicts and issue. The clone DVD and many other products are compatible with the softer default mode. The "aggressive I/O mode" is found in the program setting of AnyDVD. The "aggressive I/O mode” is used when there is the AnyDVD is not working properly or some fault is there.

I also don’t know about aggressive mode. But when my AnyDVD no longer worked. Then I have tried many solutions to solve this problem. My AnyDVD seems to scan for the disk forever.Then I have started the aggressive mode then my AnyDVD was working fine again.