Hey, so especially with the new lighting shaders/post processing code, my game can often dip into the 30-40 fps zone. I imagine that for most games, this is comfortably if not perfectly fluid, but in FSO, it's unplayable. When dropping from 60 fps down to around 30, there's a noticeable drop in joystick/mouse sensitivity. I notice this the most when I'm close to a capital ship and move in a way so that its hull fills then leaves the scene. (I'm guessing the per pixel shader at 1080p isn't happy on a crappy 3650 mobility). The effect is that it almost seems like the ship is magnetic, as movement sensitivity steadily drops and then steadily climbs as more and less hull is visible respectively.
The obvious solution is to drop the resolution so I stay afloat a fair bit above 60 fps, and that's what I'm doing. However, I'm guessing that input is somehow tied to framerate, and I'm wondering if it's possible to uncouple the two so that mouse/joystick input remains consistent despite suffering framerates. (I'm looking at you, Karuna).