I have a lot of this cards and they all works great. One of them start doing crezy things a week ago. After monhts of perfect work the card start crashing randomly. It may crash 10 times in an hours or may work for 5 6 days without crashing. I don’t know what to do and have no idea what can be the problem. I try to play with the setting but nothing helps. I also set everything to 0 exept the core and also dumped the memory to 865 and even then the card continue crashing. I also noticed that seconds before the crash the hashrate of the card drop around 45 and seconds after thata when the hiveOS update itself the card is away. Did someone have an Idea what can be and how can I fix this card or maybe how can I test it for defect memory or something … ?