Vega 56 flash to 64 issues.

[Archaea]

I flashed my Vega 56 PowerColor and Sapphire cards to Vega 64 stock bios tonight.

I'm encountering issues now. Star Wars Battlefront runs at 10FPS in crossfire. I'm getting roughly a single Vega 64 score in Firestrike even when Crossfire on the two cards is enabled. The cards worked much better before I flashed them.

This is the bios I used: It's just a generic AMD Stock Vega 64 BIOS.
https://www.techpowerup.com/vgabios/194441/amd-rxvega64-8176-170719

I used the same BIOS on both cards --- could that be an issue? I flashed the left most switch position as suggested. The cards are working - just not working well.

Any suggestions?

 

[ccityinstaller]

Have you done a full DDU and driver reinstall?

 

[Archaea]

Have you done a full DDU and driver reinstall?

Yes

 

[Dreamerbydesign]

Ymmv with results after the flash. Sou d's like it's not a good fit for your cards. I'd just flash back to stock.

 

[razor1]

did you check if your cards are throttling?

Are their voltage differences between the 56 and 64 drivers? If there are differences there is a good chance your cards are throttling.

Also try one card at a time and see what happens then.