When your card(s) throttle...PLEASE either use MSI Afterburner (look at the "limiting" graphs) or GPUZ which you installed as a service. (Right click GPUZ in the middle of the title bar, there is an option "install"). Then GPUZ provides sensors with reasons that show why the card is throttling. Just from looking at your numbers I don't see why the card is throttling.
Bios modding and flashing until the EEPROM smokes!! Yay!!