So, I've been playing this game for about 3 hours, and the last couple of days it ran like a charm with every single video setting on the highest possible. No fps-drops whatsoever, it was a real smooth experience. The day before yesterday I started the game and I noticed that the performance has dropped quite a bit. I don't think I'm even getting 20 fps all of a sudden.
I tried verifying the cache, reinstalling, tried lowering settings, my drivers are updated. It's just out of nowhere that the performance has dropped.
I'm in the stranded boat underwater section looking for a liferaft to go to Theta, if that helps.
Alright, so I'm not a smart man. Apparently one of the last patches caused my refresh rate in the settings to drop to 29, while my monitor supports 60. So I switched it back and that just did the trick.