Warframe ran fine before I stopped playing. I have a GTX 1070 Ti, 16GB RAM, i7-8700k, ASUS ROG Maximus x Hero (Wi-Fi AC). Everything ran completely smooth on the highest settings possible last time I played (maybe December?). No other games are having issues.
I've tried fiddling with a bunch of different graphic settings in-game, including even setting the graphic preset to low, and I'm still getting a lot of choppiness - it doesn't get any better at all with lower settings. The mouse stutters in menus, the camera lags when I'm moving, FPS drops when I bullet jump, it makes the game rather unplayable. It's the same even in my orbiter. What could cause this? >.<
Edit: I've also enabled high performance for Warframe specifically, as well as trying Borderless Fullscreen rather than Fullscreen, and still no change.