Everything looks pixely when I play on a resolution lower than 1920x1080. Is there a way to fix this? I need to play on a lower resolution, otherwise my FPS takes a hit in some situations.
if your monitor's native resolution is 1920x1080, then no not an issue with the game. that's just how displays are.
play it in windowed mode, that would just about be the only thing to help with the smaller resolution
Hmm, the quality of lower resolutions really depends a lot on the quality of the interpolation of your monitor. I run my full HD TFT on 720p when I make Youtube clips because Fraps would strangle my system otherwise. 1680x1050 looks pretty okay for me too. Of course its not as crisp as the native resolution but it's not that bad.