I am loving this game so far, but I'm plagued by what looks like dropped frames? The screen will stop updating for a second or so then skip ahead (I assume this isn't a deliberate "glitch effect" thing since it kept happening when I turned glitch effects off). It hasn't been a game-breaker yet, but it did make the first boss more challenging than it ought to have been. Linux Mint 18.3 / 16 GB ram / quad core 3ghz)