Flash memory can support 13 MB/s for large sequential writes, but the controller must suck as it only runs 3 KB/s (zero in the screenshot) for any 4 KB record can process! Hard drives are faster than these. Luckily I bought them to give the ISO files to people who only care about consistent performance.
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
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Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
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Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
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18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review