Run your Catalyst control center software, select My digital flat panels(on the left) Properties & make sure for your monitor, GPU scaling is unchecked ( or depending on which version you have) make sure scaling is set to zero.
Run your Catalyst control center software, select My digital flat panels(on the left) Properties & make sure for your monitor, GPU scaling is unchecked ( or depending on which version you have) make sure scaling is set to zero.