Well, first of all, here are some screenshots of the issue:
So as you can see, there is some very extreme-level aliasing going on here. These screenshots were taken with both "Smooth Lines" and "Use Anti-Aliasing" enabled, but neither option seems to make any difference. I bought the game several weeks ago, and it's pretty much unplayable due to this issue. Borders pop in and out of existence, and all ingame lines are very unpleasant to look at (especially the borders).
I am on a 32-bit linux with an Intel graphics card. I'll post Steam's diagnostics of my computer after this post.
The game runs properly otherwise, from what I've seen. Frame rate is smooth, but the aliasing makes it very straining on the eyes to play (it looks much worse in motion than in screenshots, I promise you). I'd appreciate being able to enjoy this game with smooth lines, as I didn't have a huge amount of money to spend on games, and I bought this game based on the recommended system specs, not knowing that it'd be almost painful to look at due to harsh aliasing. If someone could PLEASE help me deal with this issue, I would be very grateful.
Thanks for reading, specs will be in the post after this one.
" indefinitely to "fix" the issue (providing no explanation as to why "j" helps, or what the root of the issue is), and after futher questioning just saying "oh, your graphics card doesn't support antialiasing", even though the version just prior to that one rendered fine? That makes no sense. 
