I checked the 17.Q3 driver and it does not contain any consumer board driver (Radeon R9 M385).
AMD FirePro W6150M | 1002 | 6646 | 80 | 103C | 80D6 |
You might have tried the option AUTODECT DRIVER and the consumer driver got installed first and then you tried to install 17.Q3 on top of it. Or you did not do clean uninstall.
Try to do a clean uninstall using DDU