I get blurry graphics. Not because I'm drunk, either. :) This has happened to me before on certain Unity games (randomly happens on Pillars of Eternity). I'm on Linux Mint 17.3 64-bit, on AMD Radeon HD 7660D (A10-5800K APU) running on latest proprietary AMD drivers (15.12).

Turn off FXAA (full scene anti aliasing) in your system's graphics settings.

Antialiasing is always off because I hate it. I have however tried turning it on, turning other things off and on, tried almost every combination of driver settings and I still get blurry graphics.