Faulty card - no fix available from LDLC
The card suffers from the cooling problem recognised by AMD on the reference models (the junction temperature reaches 110°C in a few minutes, forcing the card to reduce its performance in order not to exceed this temperature limit). These models should be avoided. I fought with PowerColor to obtain a return and an exchange (at my expense...).
Unfortunately, my LDLC shop refused me a loan of a GPU (not equivalent, just a GPU that allows me to use my PC while waiting for the return, to be able to work), with the explanation that they only have new ones. I find it regrettable that customer service does not anticipate this kind of case, especially when you spend 1160€ for hardware...