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January 11, 2019
about 3 years ago
Should have paid attention to #1102822's review ("Serious hardware issues - look elsewhere") as I'm seeing exactly the same problems. Wifi bandwidth on this board is about 20x worse compared to the ESP32 -DevKitC (ESP-WROOM-32), using the official iperf example and identical environments (same Wifi network, clients, etc.).
This is also hinted at in https://www.esp32.com/viewtopic.php?t=3718, with the potential reason being the 26 MHz crystal used on the Sparkfun board. Or maybe it's the antenna design?
It's really unfortunate that this hasn't been fixed.
Unfortunately can't leave a purchase review as I've got the board from an Australian distributor (Tronixlabs).
No public wish lists :(