Couple issues with hooking up PCs to "TVs". Yes TVs are basically big monitors but its a little more complicated than that. First, you must make sure your GPU is outputing the correct resolution: your tv's native resolution, in your case 1920x1080. Although rare, some GPUs get bad EDID info from the TV and scale whatever you chose as a resolution to something else. Your TV should be able to verify what signal format is being sent. Check your TV to make sure it is not scaling. Even a tiny bit will throw everything off. Most TV's, even very expensive ones, default to "overscanning" just a bit where they crop the image slightly (resulting in say a 1900x1060 picture) which is then scaled. Look for a setting called "naitive", "1:1", "full pixel" or something like that. The other thing that can go wrong between PC and TV is signal format. TVs like to talk YCrCb (4:4:4, 4:4:2, 4:2:2 etc). PCs like to talk RGB. Either signal can be Video level or RGB level. A good TV should accept and correctly display anything but most trip up with certain combinations, some might not even display certain ones at all. If your GPU lets you chose try changing from RGB to 4:4:4, or vice versa.