The folder size increase 40x after copy to the SSD (31M -> 1.3G)

As Title and the screenshot;

The folder copied to Sandisk SSD because much bigger;

Source Device/FS: Macbook / APFS
Target Device/FS: Extreme SSD / exFAT 

Any solution?

Screenshot 2019-02-22 at 11.07.57 AM.png

how many files are in the folder? is it a lot of very small files? 

can you try reformatting into a different file system and see if you see the same issue?

also is this an extreme SSD connected with a cable or enclosure or is this the extreme portable USB SSD?

Hello, can you contact us to open a case so we can ask for more details 

Yes, how to open a case???!