Have you ever noticed when you r falling from a height in gta sa you r falling at a uniform velocity? When you jump from a hill or something, immediately you accelerate to a velocity of 55 m/s and maintain the same till you hit the ground. Well, where's the acceleration due to gravity? It's literally 0 in that case.

I've made a cleo script that would introduce some acceleration due to gravity, meaning the speed or velocity at which you fall will keep on increasing at a constant rate. It is supposed to be 9.8 m/s^2 but due to the nature of the game it tends to go back so effective acceleration won't be 9.8 For altitudes of 500m -1000m the effective rate is about 9.5 m/s^2 for altitudes of 4000m range it s reduced to some 7 m/s^2. It goes on reducing when you go to higher altitudes because of the game trying to set it to 55. Anyhow you still get some 7 m/s^2 acceleration which is better when compared to 0 m/s^2.

The screenshot shows CJ falling. He is 25m above ground level in the screenshot falling at a velocity of 115 m/s. The fall was started at 760 m above ground with an initial velocity of 0 m/s.

One more thing, this acceleration doesn't work if you are doing a freefall cuz if i made it work even during freefall then the player is not doing the free fall animations and also declines at a slow rate( i dunno how to fix that). Otherwise it works perfectly and so far no bugs or crashes found

Installation
put gravityfix.cs file into Cleo folder (u need cleo 4)

If anyone can fix that parachute thing pls send me a PM.
Have fun! Now you can do a supersonic freefall! provided you get to an altitude of 39000m or more without parachute