Hi, this my speed (2x480 XFX)
Version 6.3:
https://file-up.net/big_b43c7f73bd6932d57320160909122804.jpg
Version 6.4,7.0:
https://file-up.net/big_6cbf85c158863d1f7320160909123232.jpg

Speed down on 0.8 MH/s ETH and 10 MH/s on DCR per each VC, with the same others parameters.

Is it normally?