I'm not sure this can be helpfull, just my personal choices for for time less loss. (I like "less loss" assonance in your language).

First I consider that in restaurant you don't lay the table for the entry, the main dish, and the dessert at the same time, but you desserve and re-lay the table between each turn of service. and so do I for my runtime directories. Presently I'm working on a Jurassic scene, and You can read in my home page the list of what I installed for, and there is no other thing installed else what I need, all what I need, only what I need for this scene. After applauses, let the play-ground of the theater will be cleaned of decorums, costumes, actors etc...

Why? Because I noticed that runing DAZ-installers of  5, 15, 30 items takes only few minutes within a 30 hours of hard work on your scenes. so hundreds of figures, poses, morphs, textures, of you previous fairy tale lovely scene for a young people magazine, will brake and bother you on your present new scene of Lancelot fighting the dragon under a crimson sky  near the haunted castle.

By the way,  I previously uninstalled all items after final, realy final, DEFINITIVE final  render. But now, I no longer do that, because It is again time loosing. I just delete (DELETE, not EMPTY!) the Runtime directory and all others in the "MyCurrentProject" dir.

Worse, I added recently a touch of satanism in this way, by using a disk partition dedicated to the project, to avoid spending 350 times one full minute  with developping
c:program filesdazDaZ studiocontentRuntimeLibrairiesDazpeopleAnimalsmilDragonposes 
(from memory).

So, I've a small 5Giga bytes partition on my Hard drive named let's say H: which contains my previous work with 2500 files.

• I no longer uninstall them, I just format the disk H: in the file manager, with the option "Quick formating". It takes less than one minute for 5 Gb. so H: contains nothing. Absolutely nothing.
• Now I load D|S, go to preference>directories, remove all, Add just H: (which, I repeat, is empty), validate and quit. Reload: the ancient fake directories have disapeared!!!
• HERE I install what I'll need for my new project, all what I need, only what I need for my new scene. It takes 5 minutes at all. When installers display the the pop-up window "Searching for installed content" I immediately click on the "CANCEL" button, and Type always "H:" (and nothing else!) as the target directory. 
• Now I load D|S. I click on the button "search for content" ,untag anything else H:,  and click OK. After few seconds, it's done. I go to the content tab and guess why I find? All what I need and only what I need!  in few and neighbour tree-views.

So, let's summarize:

• Formating H: --> 2 minutes.
• "fake" loading D|S and clearing & adding H: in preferences tab: -->1minute.
• Installing 30 items: -->8-10 minutes. (depends of the scene)
• Reloading D|S and "search for content" : -->1 minute.

Disk partition is an option. A good option, but an option. you can also use an external drive,  memory mini-card or a usb key, it does absolutely NOT affect the rendering or loading time.
Since I do that, I'm living on a flying carpet. But what is the price of a flying carpet?
 
There is one: as I install DAZ's items each time I begin a new project, I am obliged to be extremely rigourous in the management of my intallers. As I downloaded quite all free DAZ, (200 items) a lot of platinum oldies (a treasure! some jewels could be found among a lot of old towels), and each week one or two more freebies, I cant feel authorized to be laxist not imprecised in the organisation of my installers files. so I invested some hours to build a clear, steady, explicit, and knowledge-full tree for my installers files. All buildings together, interior subdir, exterior subdir, all animals together, flying subdir, aquatic subdir, domestic subdir, jurassic etc...EACH product ALONE in a separate directory, meaningfull named and containing: - The ".EXE" file 

• The ".MHT" file (the product page of DAZ product site, with all the datails of contents, requisits, etc...
• The ".JPGs" of sample pictures in the DAZ product page (enlarged) for a quick browse to collect stuff for the scene.

 I must admit that costed me efforts, but now, when I download an item from DAZ or from everywhere, I always save the product page ("Save as" in IE with MHT option. NO off line reading), I always save the 3-4 most significant pictures, and then download the EXE file, save all in a comprehensive place in my collected items Directory. Doing that I never need more than 1 minute to find what I need.

Bye-bye,  the hell!

Friendly, Locus Solus.

ps1: Never try to partition your hardrive, even using quaterdeck's "Partition Magic" if you are not easy with that manip.
ps2: Are you free for Valentine's? Alalaaa...those french guys, they have not changed!

That's all folks  
The .JPG"