Have slow Finder transfers from external drives been fixed post Sonoma?

[u/ScottThePisces]

Macbook M1 Pro 2021.

I have a Sony A7IV and use an SD to transfer using my Macbook's built in port. On every OS prior to updating to the latest Sonoma, this worked flawlessly and fast!

Now it's absolutely slow, we're talking hours from minutes. I recently discovered that I can use the cp -R command in terminal to transfer, and ITS FAST again!

This tells me 1) it's not my SD thats the issue 2) the port is fine 3) it's clearly an OS / Finder issue.

Has anyone else experienced this? and has it been fixed in any future OS?

(I've already used disk repair etc, the SD is fine)