Hi!
I've noticed that all 4 anyFC F7 boards i bought (not at once) from Polish local retailer (I don't know exact source, chineese obviously) have 3.0V LDO (REG113NA-3) [ R13D package code] instead of 3.3V (REG113NA-3.3) [R13C].
The other LDO for sdcard is fine, 3.3V.
This was only critical for me in ADC measurements, the scaling gets weird... But it's worth mentioning as it could also apply to other users.
Regards!