Yeeeaahh, I fixed the framerate slowdown on some computers, I think. I was playtesting on high game speed (46 FPS), and noticed the game slowed way down when walking on ground or cliff terrain on crowded maps. This has been fixed, so everything should be much smoother now.
I also added a bunch of performance options before I made this discovery. You can now run the game in 16-bit color, turn down the draw distance, and turn down the rain effects (so that the rain completely stops when you are indoors, so there's no need for raindrop collision). But honestly you probably won't need these new options now that I fixed that aforementioned slowdown bug. I need your feedback with all your own computers and video cards.
Also some other minor bugs were fixed (check updates text).