My computer is by no means 'a beast', but it's not as weak as others. I have a GTX 750ti, an i5 4690k (which is glitched into a higher clock speed than normal), and 16 GB of DDR3. If you don't understand any of that, it's fine. It isn't too relevant, I don't think.
I haven't posted this under the Bug Report sticky, because I don't consider it a glitch. It's more of a performance issue.
What I experience: After approximately ten minutes of gameplay, My frame rate (FPS) drops from a stable 90-92 to an unstable 65-30. I try to keep my nets clean, I don't build anything crazy (with only ten minutes to build, it wouldn't be possible to build something crazy), and I tend to only have two or three Water Purifiers, two or three Cooking Stations, and one Crop Plot. My frame rate seems to destabilize more around dusk and dawn, but drops occasionally happen between.
Is there anyone else experiencing something similar?