I need help ingesting and storing ~5tb's of photos.

I am a photographer, and i take 5-6 hundred, per shoot. I only have a DAS connected to my computer, and it is on USB 3.2 gen 2 speeds but the SATA drives are only doing USB 2 speeds.

I am tired of ingesting the photos at ~40MB/s. it takes about 1.5 hours per SD card. It also takes a long time going through each photo as they take seconds to load.

What are people doing to deal with the slow speeds? What can I do to assist all of the speeds?

I was thinking about buying used servers, but im not sure of they would be good, and they are noisy.

I have also looked at NAS's but none of them seem to have space for m.2's for fast temp storage, so i can move on to the next card.

any help is appreciated.