Did the flickering happen when you had your resolution of the screen set higher so that you were able to see more of the right side?

If it flickered then, but it did not flicker on the same page when you had the resolution of the screen set to 800x600 then it's likely that your graphics card is not a very high quality graphics card or your monitor is not a very high quality monitor or both. The more stuff you try to cram in to one screen the higher quality you need your monitor to be and the higher quality you need your graphics card to be.

I'm not sure what you're referring to about the type being smaller. Did you try the "Ctrl +" to make the font larger? How did that work if so? Or maybe you're saying the font got smaller as you got closer to the right side of the screen. If that's the case, I don't know what to say about that...