Great, thank you!
If they were asking about the HDD, then it may be related. Funny...I have no idea why the speed of a HDD vs. SSD would affect the type of asset called loaded by the game. Maybe it can interfere with some RNG function of the randomization.
But, they must have asked for a reason...so, yeah!
About the area you're seeing around Misty's shop, is it regularly spawning dupes? Any other areas that seem to constantly do it?
The dupes were in the whole world, no matter where. But in more crowded places it is painfully obvious. So like around Misty's and in front of V's mega building or in market places. But also inside like in Lizzie's Bar and the Afterlife. And cars were duped everywhere, like 4 or 5 truck duplicates in a row and accross the street 4 duped cars.
Im kinda not suprised tbh, the game probably dont know how fast your hard drive is. If you set it too slow HD it will choose to preload to ram instead is my guess. and never do the on the fly loads as it does on a faster HD. Could be why i rarely see duplicates and has pretty much been that way since release. It happends but not nerely enough to annoy me. Slow hdd mode probably just preload some assets too ram/vram then only use those, hence why you get more clones.
I had the Slow HDD Mode pretty much to On from the start. In December it really had a good effect on the game, less suddenly popping up NPC's and cars. There were dupes but not noticeable, just normal. Just like you describe it. This till version 1.23.
With 1.23 CDPR tackled dupes according to the change log but I started to get noticeable more dupes. Not only me, it was mentioned here and in other forums and also in videos.
And with 1.30 the dupes really took over, cars were now also duped and the world was emptier. Again also mentioned here and in videos.
All this with Slow HDD Mode set to On.
My guess is roughly the same as yours: with the setting to On, now there is just a limited set of NPCs and cars pre-loaded into RAM and the game is working with that. But there can only pre-loaded so much into RAM, resulting in a world that looked emptier.