I have just tested this with the R412_8.5 fw off the FTP. Stock Ladybird frame with hubsan X4 props.
Works like a charm, no lockups in 3 flights of 8-9 mins. Havent done a range check or anything like that, but I could it fly as far away as I am comfortable with for such a small craft - about 50 meters, I think.
Didnt do a log. Can do some if needed....