Hey RankOverall,
That does sound odd!
Can you have a read over the troubleshooting in this FAQ: https://support.ubisoft.com/en-GB/fa...-or-capped-FPS
If that fails can you get back to me?
I don't think it will be a fault with your graphics card if you can play other games past 60 fps without crashing.
Are you able to get in touch with on the support site sending your dxdiag and msinfo: https://support.ubi.com/en-GB/faqs/0...ag-and-Msinfo/
We will be able to see if there is anything out of the blue.