My card has recently had its core clock extremely throttled and I haven't been able to find a way to fix it. Some days it'll fix itself over the course of the day if the PC is on but the core clock is almost always stuck in the 500 MHz area on boot. I've reinstalled drivers and set my preferred power management to max performance in the control panel but this hasn't helped. I logged GPU-Z stats and found that when the clock randomly fixed itself during the day, the PerfCap reason switched from 1 (Power) to 16 (Utilization, I think), and clock speeds ran normally after that despite wattage consumption not changing materially. I'm stuck - anyone have any ideas?