Try changing the thermal paste and cleaning any dust within the cooler also add some fans that blow some cold air into the case towards the graphics if that does not work try to change the fan profile within MSI afterburner to a more aggressive one
Try changing the thermal paste and cleaning any dust within the cooler also add some fans that blow some cold air into the case towards the graphics if that does not work try to change the fan profile within MSI afterburner to a more aggressive one