Activate Manual mode and set Auto Morph Distance to low value like 5 or less.

The less the value - the worse clothes or hair will fit to a character skin but for testing purposes it’s a time saving feature.

Imagine a situation when you are not sure if Mirage Creative can import specific hair or clothes (maybe even 10-20 different hairs in one Daz Package) and by default hair takes quite a long time to import (around 10 mins average). But with this checkbox ON you can import hair in 15-30 secs instead just to confirm that it imports fine. And only then you can reimport hair with this checkbox OFF (auto mode is active) for the best results.

Another situation is that you try to repackage Daz asset from Renderotica and need to constantly click Daz/Build to test if it finally converts. Waiting each time for 10-20 minutes for hair to be converted only to see another exception at the end is frustrating but with this feature you can iterate much faster.