no problems with my octo,
Droidworx AD8-HLE-360
Avroto 2814-11S
Maytech 45A opto
APC 12x3.8 balanced
AV200 + Pan kit
Thunder Power G6 4S 5000mAh 45C x 2
Futaba 18MZ + R6203SB
AUW 5.3kg including 1kg dummy weight for camera.
POI tested, Intelligent RTH tested, spot on hovering for about 10min in GPS coming down 40% left in battery ( shows on Hyperion 0720 Duo)
no problem with my F550 stock with Aeroxcraft set, as well.