Added in: I ran a quick check using an image folder from a small astro project I am working on. The folder contains 101 X-T30 full size raw image files each being stored as 55.9 MB files in size. These were all converted to FITS format using Siril, an astro-photography image processing program. It reads each image into ram, converts it into FITS format and writes the converted file back out to disk, these will be used for actual processing. So, for 101 55.9 MB  raw files ---> 101 52.1 MB FITS files, Siril reports that it took 3.68 (3,68) seconds. I am fairly certain the 10 Gb NVME enclosures can handle the larger 200 MB GFX files without any troubles, of course the 40 Gb enclosures can as well. https://siril.org

My goodness! I am so amazed this worked! Oftentimes, my technical problem doesn’t get solved, but this one did! Thank goodness to the peanut foil that was there when I was looking for a solution. Worked worked worked!    saved in my gdrive a copy of how it looked https://drive.google.com/file/d/1EJ41l09KMQL6ZV69QLA8rWaied6Dzumm/view?usp=drivesdk   thanks a lot!!!

I use a USB 4 NVME enclosure with a Samsung 2TB SSD, but I just about always, but not completely, use it connected to a desktop computer. The SSD itself is faster than the USB or Thunderbolt ports can transfer data, this is true for just about any NVME SSD, but that is not a problem, the data is moved back and forth as fast as the computer can handle it, later I can give you some more concrete ideas but roughly turn several hundred X-T30 full raw files into FITS format and process them as fast as you please. I use a handful of SDXC, etc. cards out in the field, it is easier than worrying about connecting cables and stuff in a hurry. The T9 and other 10GB enclosures should be pretty good, those are no slouches at handling data.

🤭 🤣 That one ranks up there with your saying from long ago: “Read The Fuji Manual”.

You are welcome, @BIGOAK, sir. We have just scratched the surface here, there is a lot more to it.