All settings on low even resp to an emerg spd call feels like reds spd
Don't be top hasty especially with an issue that is like this. Reboot your machine, and next time you do another round of benching or gaming don't let the card get hot. On stock coolers I manually set the fan to a speed that I and it keeps the temps down so I don't get the slowdown. Get hot and the driver will throttle your clocks or power limit.