Hey there friend,
So I have two approaches that may offer you insight and experiences.
I have a main PC I built that has 40GB RAM
I have a Laptop I use for mobile composing that used to be 12GB (was flawless, I upgraded to 16GB ram for Running an extra DAW)
I barely noticed a different anything after 16GB to 40 unless Im doing Orchestras where I have about 16 channels as MIDI and 20-30 tracks as Audios of instrument recordings.
Even with this same project, when I would bounce to laptop It would run fine on 16GB, just with a minimal beachball or blue hoola hoop loading time, but nothing to test patience.
I think We underestimate RAM these days in music production, I found having a better processor and Solid state drives truly make more of a difference, ESPECIALLY with VST’s and sample libraries.
Id say you should be Optimal at 12GB. 16Gb would rid almost any bog with multi channel’s of you also have SSD and good processor.
My laptop is a cheapo Dell Latitude E7270 which has Core i7 and I am shocked with all the abuse I can throw at her in Cubase. But again, think this goes to the processor not my Ram since from 12-16 I did not see that much increase in performance.
I often times use my laptop more too, since its those strange hours like 3AM when Im most relaxed that a melody creeps into my mind, or some cool dynamic percussion so I always have it close and leave my Station in the studio to either expand on or sit and complete a project.
To sum up in case of TL;DR
12GB ram should suffice even if you are orchestrating with insane levels of VST.
16GB would most certainly help but not much considering you have SSd’s and a great processor.
32G+Ram seems useless to me, for what I personally use. As I told you I slowly inched all the way to 40 and did not see notable viable difference. I do use a lot of live instruments recorded INTO the daw though, I only use slight VST’s but I do overhaul on effects and plug ins. So highly depends on your workload and VST use and what drives they are stored on.
At least from my experiences… Processor and SSD’s really increase performance, being at 12GB Ram is mighty fine for music producing. More isnt always better… 32GB+ seemed like a waste of funds to me for what is in demand. But technology also changes, in 10 years 32GB may be the new “8GB recommended”.
Good luck, and hope this helps!