@DarrenCorbett9 Hey, sorry to hear you're having issues with the game. Have you tried verifying the game files before starting the game? Are you using any mods?
@DarrenCorbett9 Are there updates available for your Graphics Card? Are you running programs in the background which may cause conflicts?
If none of these apply, please contact our technical support with info on the steps you tried and your DxDiag file for investigation:
https://support.ubisoft.com/en-GB/