About fonts. Please, check my thread Radeon HD 7750 and red/blue tint on fonts. Do you have red or yellow tint on black text?
What is the panel size? I had 21.5" panel size / 1920x1080 at 60 hz and the fonts are displayed without any problems.
Now I have 23.8" panel size / 1920x1080 at 60 hz and there problem with fonts red/blue/yellow tint.
Most likely you are not running full 4:4:4 Chroma. I too was never able to get my TV work 1080p but it does work fine 1680x1050. For some reason if the TV detects 1080p resolution it will introduce HDMI processing.