I've never run into this issue other than in some zones with a lot of foliage and running water. Brayflox, for example, has never given me particularly good framerate. Anywhere else in the game though, it's not a problem. In Windowed Fullscreen I get about 50-60fps. Dungeons, raiding, out in the world, etc. Even in extremely crowded areas it'd drop to about 40 at worst.

But lately if I spend only about 30-60 minutes in game, my FPS just completely tanks. I'm lucky to push 20-25 fps in the world, and in something like Revenant's Toll I'll get anywhere from 15-18. I have changed no hardware, made no graphic setting changes, nothing. It's getting really frustrating because I can barely get anything done before it just plummets to unplayable levels.

I can also hear that my GPU fan almost stops when this happens too, but I'm not sure if that's a symptom of it already tanking and thus making the GPU not need to push itself, or if the GPU stops pushing itself and thus the game tanks. However, I will say I don't have an issue of the GPU just deciding to *stop* in any other game so I doubt it's the latter. If anyone can explain what the heck is going on, it'd be very appreciated!