I just purchased a SanDisk Ultra Fit USB 3.1 Flash Drive 256GB SDCZ430-256G-G46, the first thing I did was enable BitLocker on it and set it up to encrypt files as they were added to it. I am currently trasfering a 76GB folder from my m.2 SSD to the flash drive using TeraCopy, but the transfer speed is only htting around 20MB/s, this seems VERY slow to me. Is this becuase BitLocker is encrypting the files as it transfers them or is this just a crappy flash drive? FYI I am using a usb 3.0 port.