I come from Fighter Ace.
With the update from Fighter Ace 2.5 - 3.0 weather was added. Rain and clouds.
When Jaleco added this weather they did because the players asked for it. Now the nice fluffy clouds are great and you can even hide in them. The problem is it causes a huge hit on your machine, this hit causes lag.
The other problem is that Fighter Ace can have a cloud layer. This layer is nice at first because it is different. A cloud layer in Fighter Ace is a layer set at a specific altitude, this layer can then cover any who go into it. Now your thinking nice, WRONG!
IMO it's ruining the game.
Now in FA 99% of all fighting is done below this layer, this makes it even harder for Bombers to come in and do their job. It also gives you the feeling that you are flying in a fish tank with a lid on it.
Rain and now with the update from 3.5 - 3.6 SNOW, it has even complicated matters. Players with 2.6 gig systems, 1 gig of ram and Radeon 9600+ or GForce 4's and even 5's are experiencing lag.
You will pay for what you ask, and weather in FA is what is driving me here. I am looking for a WWII Flight Sim that I can fly in not play Car Wars with.
No good deed goes unpunished.