Extremely Slow USB File Transfer Rates

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user 1995

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Has anyone experienced painfully slow file transfer rates via the USB 3.0 port to a USB 3.0 flash drive?

I'm running Win 10 Pro 64 bit on a Lenovo i7 T470s 7600u with a speedy SSD and all the latest updates. The flash drive is a Sandisk USB 3.0 64GB (I've tried FAT32 and NTFS).

Copying a folder with 1000s of files and about 1.6GB in size is excruciatingly painful. It seems to start off fine for a short while and grinds to a halt at the 14% or 18% mark, going down to 0 kbs for sustained amounts of time at certain points. Strangely enough the same copy to a Samsung external HDD is infinitely faster. Copying from the flash drive back to the SSD is quick. I have experienced this on 2 Win 10 laptops and on 2 USB 3.0 flash drives, the other being a Kingston 16GB. I've tried most of the fixes from the net but nothing seems to work.
 
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