Verify is slower than test for UDF formatted drives.
Using the verify after copy function is slower than manually using the test function for UDF disks. I've been copying files to M-Discs for archival, and when using TeraCopy's standard verify function the read speed caps at 17MB/s. When manually using the test function, TeraCopy is able to reach the full read speed of 26MB/s. Using SHA-256 for hashing, with a 4MB buffer size.