As most endgame omni-crafter with less than 5-6 retainers know, at some point you simply stop holding HQ materials. They don't really have a higher market value than NQ and you don't need them for any craft. Every craft in the game can be done with just NQ materials with a geared lv80 crafter.
This ends up being tedious when you constantly have to lower quality on materials you gather, find or make.

The suggestion is to have a section on Character Customization -> Item Settings to disable the acquisition of HQ items. For example:

Disable High Quality:
* Quick Synthesis
* Retainer Ventures
* Gathering
* Loot and Creature drops

You can tick the appropriate boxes and while ticked will only get NQ materials from those sources.