Custom file paths / different driver issues

I’ve assigned megascans to another drive along with downloaded hdris. Unfortunately on startup I’m either waiting forever for the program to launch or having to force quit the unresponsive startup. Upon removing my the config file found on another suggestion, it’s allowed tm to boot fast, but remove the relationship to all the downloaded data. Is there a workaround to this? Should I just assign everything to a custom folder and not bother with downloading in app models and textures?