Your FPS is higher than 60, which broke the physics of the game, causing you to crash after air-assassination.

To fix it, you must limit your FPS to 60, after this mission is completed, you can change the FPS back.

You can limit the FPS via the in-game menu, or via your graphics card control panel.

For idiots like me There's no fps graphics setting, what do i need to change to get it my fps down?

Originally posted by Zeatanas:

For idiots like me There's no fps graphics setting, what do i need to change to get it my fps down?

Hey Zeatanas,

So the easiest way is just to use the in-game settings to limit FPS for that section only:
https://imgur.com/4SoGn0d
You mentioned not seeing this option? I know if you're playing on a laptop, sometimes this FPS option is not available, I have no idea why as I know very little computer hardware&software stuff. You could maybe try the second method below:

2nd method: For NVIDIA cards, I have no idea about AMD cards sorry, but they should be similar:
1. Right click on the desktop, then select NVIDIA control panel:
https://imgur.com/hUnKOV7

2. Click on "manage 3D settings":
https://imgur.com/IgLiHQ1 (you can open the image in a new tab to see it more clearly)

3. Select "program settings", then in the dropdown menu, find AC revelations, make sure to select the "SP" one:
https://imgur.com/DqWvfsn

4. Find the "max frame rate" setting, change it to "on", and the max FPS to "60" or below:
https://imgur.com/6Nc9upI

5. You should also turn VSync on:
https://imgur.com/nk1bvhd

If neither of these options works, you could maybe try playing on a desktop instead (manually copy your savefile to the desktop) or seek help from someone with more expertise or maybe the Ubi support.

thank you everyone

Has been answered already in this forum:

https://gtm.you1.cn/app/201870/discussions/1/3115897635596819334/

Thank you everybody, it works :)