Yes, I would use the Pulse bios on the reference. You could also try the Nitro+ since the reference has the full size pcb. However, the Nitro+ bios may cause the card to run hotter since the Nitro+ is overclocked and has a better cooler to keep temps down. On the other hand, the Pulse has a lower fan speed limit (1,650 rpm) than the reference so it may run on the warm side under load as well. The Red Dragon has a 2,000 rpm limit so it may keep it cooler. You could test all of them and see which works better. If you can, let us know the case and card temps at idle and under load before and after the bios flash.
thank you. i will try this when i find the time for it. to anyone reading along: don‘t wait for it. this could literally take months.