I have the Steam version of the game and when usually playing I have 100+ fps, however when in islands, skeleton forts & skeleton ship spawns the fps drops so bad it's unplayable. (because the whole game becomes so laggy and starts freezing up, sometimes for about 3 to 5 seconds).
The thing is, on the day the game launched on steam I didn't have this issue, it only started the very next day.
I play with 2 friends who both own the Steam version of the game, while one of them has the issue the other one doesn't. Does anyone have a solution to this?