While you are within spec, you are heating up your total system when pushing it at max settings for prolonged periods. Of concern is your comment on distortion of images.
Are you overclocking your CPU or GPU? If so, go back to default settings and play again to see what happens.
Also, how is your systems overall airflow and cleanliness? Take a peek inside and clean, if needed, and optimize your case airflow by maximizing your airflow (moving cables, when possible, is a big help.