Hello VXDLL,
I managed to remove motion blur on my project so I put pictures of my settings below.
I hope it will help you a bit.
On player’s camera, I unchecked amount.
Settings on the player’s camera :
I also added a post process volume as component in player’s blueprint.
Settings on post process volume :
There is also a setting in the project settings, I did not change it but maybe you can take a look.
It is in Engine/Rendering section.
Project Settings :
Hope it will help.
Have a nice day.