Wouldn't that entail an entire rewrite of the engine as only the chunk the player is in will be loaded at any given time? Having localised weather/wind being simulated outside of a players chunk/ field of vision will only create another group of people being a tad annoyed with the severe frame drop of having to simulate the weather patterns/wind in all of Valheim. Even the parts outside of your chunk/view or the parts that haven't been discovered and proceduraly generated yet. But yeah... the windmills would work. Though they wouldn't be that much faster with 1 to 2 FPS due to having to load the entire world to simulate the weather patterns. Whilst it sounds nice at first, such a fix would tank the game if it were a global 'fix' or you would still be stuck with a localized weather solution, which would still require you babysitting your windmills somewhere nearby. Regardless... the likelyhood of Iron Gate making any changes to the way weather/wind works is fairly slim to almost none existant.