Neither the Sapphire OC nor the Asus bioses from TPU seem to fix the issues, still getting freezes if the temps are low (IMMEDIATE freezes too).
If the card is a little warmer everything is perfectly fine, I can run FURmark as long as I want with the rad fans turned off.

Gonna try with the Aquacomputer cooler tomorrow (maybe it cools worse = better for me lol), otherweise I'm just gonna have to sell this card to some die-hard aircooling fan