AHowesAre you using 2 seperate single power connections to the card? What psu and how old?
kemicalchaosHi,I just wanted to thank you for posting this thread and it's solution. I recently went through exactly the same symptoms and after reading your solution removed the GPU coloured cable extenders you can see in my profile piccie. Not only did it fix my issue but the card (EVGA 2080 TI XC Ultra) runs faster toboot! Happy days! Many thanks once again.. :)