Always fun!

Now that I get it, yes, there are a few minor differences in mine.

I have, but do not actively use, a BIAB audiophile USB drive attached. [I say, not actively, because I have already installed the program and a subset of RealTracks onto my desktop on a spare SSD drive for speed).

First, like you, I have a DX Settings folder in BIAB on both the desktop drive and the USB drive. They are only a few bytes different in size, though, and most of the dates line up. I have one file dated yesterday, DefaultDXiSynth.tgs on the desktop drive, even though I do not use a DXi synth! No such file on the PG Music USB drive.

Each has a folder for Amplitude. I don't use that, either, and they are identical.

I don't know if any of this helps you or not. I'm not terribly concerned for me, mostly because the whole set of files is only about 24 MB. If they were huge, I would be more likely to ask questions.

I wonder if some vendor who made the DX files thinks it is usually on the boot drive, so they just put it there anyway? If you temporarily renamed the folder on drive C, would it still work? I'm betting, yes.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.